Given a 1.00 L solution that is 0.60 M HF and 1.00 M KF, calculate the pH after 0.13 mol NaOH is added, and calculate the pH after 0.24 mol HCl is added to the original solution.

Answers

Answer 1

After adding 0.24 mol HCl to the original solution, the pH is approximately 0.12.

To calculate the pH after adding NaOH and HCl to the original solution, we need to consider the reaction between the added substances and the existing components in the solution. Let's break down the calculations step by step:

Reaction with NaOH:

HF + NaOH -> NaF + H2O

Given:

Initial volume of the solution (V) = 1.00 L

Initial concentration of HF (CHF) = 0.60 M

Initial concentration of KF (CKF) = 1.00 M

Amount of NaOH added (mol) = 0.13 mol

Since NaOH is a strong base, it will react completely with HF to form NaF and water. We need to determine the remaining moles of HF after the reaction.

Moles of HF initially present = CHF * V = 0.60 mol/L * 1.00 L = 0.60 mol

After the reaction with NaOH, moles of HF remaining = Initial moles of HF - Moles of NaOH added = 0.60 mol - 0.13 mol = 0.47 mol

Now, we can calculate the concentration of HF in the solution after the reaction:

Concentration of HF (CHF') = Remaining moles of HF / V = 0.47 mol / 1.00 L = 0.47 M

To determine the pH, we need to consider the dissociation of HF into H+ and F- ions:

HF -> H+ + F-

The dissociation of HF is incomplete, so we can assume that [HF] ≈ [H+].

[H+] = [HF'] = 0.47 M

Using the equation for pH:

pH = -log[H+]

Calculating the pH:

pH = -log(0.47) ≈ 0.33

Therefore, after adding 0.13 mol NaOH to the original solution, the pH is approximately 0.33.

Reaction with HCl:

KF + HCl -> KCl + HF

Given:

Initial volume of the solution (V) = 1.00 L

Initial concentration of HF (CHF) = 0.60 M

Initial concentration of KF (CKF) = 1.00 M

Amount of HCl added (mol) = 0.24 mol

HCl is a strong acid that will react completely with KF to form KCl and HF. We need to determine the remaining moles of KF and the resulting concentration of HF after the reaction.

Moles of KF initially present = CKF * V = 1.00 mol/L * 1.00 L = 1.00 mol

After the reaction with HCl, moles of KF remaining = Initial moles of KF - Moles of HCl added = 1.00 mol - 0.24 mol = 0.76 mol

Now, we can calculate the concentration of HF in the solution after the reaction:

Concentration of HF (CHF') = Remaining moles of KF / V = 0.76 mol / 1.00 L = 0.76 M

Again, we assume [HF] ≈ [H+].

[H+] = [HF'] = 0.76 M

Calculating the pH:

pH = -log(0.76) ≈ 0.12

Therefore, after adding 0.24 mol HCl to the original solution, the pH is approximately 0.12.

Please note that these calculations assume ideal behavior, neglecting any volume changes due to the reactions. Additionally, the calculations only consider the impact of the added substances

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Related Questions

The "Dust Bowl" had the greatest impact on - (12A)

Question 5 options:

Residents in urban areas

Citizens of Alaska

Farmers in the Great Plains states

Workers in Northern factories

Answers

The immediate impact of the drought is most commonly recognized as agricultural. Many crops were harmed as a result of little rainfall, high temperatures, and strong winds, as well as bug infestations and dust storms that followed these circumstances. Hence, the correct option is Farmers in the Great Plains states.

What happened in the dust bowl?

Dust bowl winds swept into Nebraska and other portions of Texas. These strangling winds had such a devastating influence that crops failed altogether, as well as the loss of a few lives and cattle. Dust Bowl, both the drought era in the Great Plains that lasted from 1930 to 1936 and the region of the United States Great Plains that spanned southeastern Colorado, southern Kansas, the Texas and Oklahoma panhandles, and northern New Mexico.

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Do you think Lum May's statement is a credible source about the events of
November 3, 1885, in Tacoma? Explain why or why not.

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Yes, Lum May's 6 para statement can be considered as a credible source about the events which occurred on the third day of the june at Tacoma in the year 1886.

More about Tacoma:

On November 3, 1885, the Chinese population of Tacoma, Washington Territory, was forcibly ejected from their community, resulting in the Tacoma Riot of 1885, also known as the 1885 Chinese Expulsion from Tacoma.

Chinese people were forced to board a train bound for Portland by the mob after being marched to a railroad station. The buildings in the Chinese neighbourhood were demolished in the days that followed. The incident was brought on by escalating anti-Chinese hostility and violence in the American West.

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which factor contributed to more settlers arriving in Texas?

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Answer:

Anglo-Americans were drawn by inexpensive land and believed annexation of Texas to the United States was likely and would improve the market for the land. Some settlers were fleeing debts and sought refuge in the Mexican colony, where they were safe from American creditors.

Using the drop-down menus, choose the best word or phrase to answer these questions.
1. What was the Obama administration's primary focus in Cuba?

Answers

Answer:

B. ✔ promoting democracy

then its

C. ✔ improving national security

Explanation:

The correct answers are:

B. ✔ promoting democracyC. ✔ improving national security

What is a Political Administration?

This refers to the regime change that has to do with the system of governing that a government adopts with regards to both domestic and foreign policy.

Hence, we can see that Obama's administration had a focus on the democracy of Cuba and this was done with the aim of improving national security

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!!!NEED HELP ASAP!!!!
What does this image say about Andrew Jackson and his respect for the laws of the United States?
a
Laws are for the weak; authority is for the mighty.
b
As king, Jackson reminds his people that he is the absolute ruler.
c
For Jackson, the Constitution is nothing more than something to step all over.
d
The veto is the only law Jackson respects.

Answers

Answer:

For Jackson, the Constitution is nothing more than something to step all over.

The Wilmot Proviso proposed to forbid slavery in any territory acquired during the Mexican War. T/F

Answers

True. The Wilmot Proviso was a proposed amendment to a congressional appropriations bill in 1846.

It sought to prohibit slavery in any territory acquired as a result of the Mexican-American War. The proviso was put forward by David Wilmot, a Democratic representative from Pennsylvania. Although the Wilmot Proviso was never enacted into law, it sparked significant debate and became a pivotal issue in the growing tensions between the North and the South over the expansion of slavery in the United States.

The Wilmot Proviso emerged as a response to the acquisition of new territories from Mexico, including present-day California, New Mexico, and parts of Arizona, Nevada, Utah, Colorado, and Wyoming. Its main objective was to prevent the spread of slavery into these territories. Supporters of the proviso argued that allowing slavery in the newly acquired lands would be contrary to the principles of freedom and equality. However, the Wilmot Proviso faced strong opposition from Southern politicians who feared that it would disrupt the delicate balance between free and slave states and potentially lead to the abolition of slavery altogether.

Despite its ultimate failure, the Wilmot Proviso set the stage for future debates and conflicts over slavery in the United States, ultimately contributing to the tensions that led to the American Civil War.

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3. The list below describes British Terms written in the Treaty of Paris.

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List below describes British Terms written In the Treaty of Paris, the British Crown officially identified American independence and ceded maximum of its territory east of the Mississippi River to the United States, doubling the scale of the brand-new state and paving the manner for westward expansion.

The key provisions of the Treaty of Paris assured each international locations get right of entry to the Mississippi River, described the limits of the United States, referred to as for the British give up of all posts inside U.S. territory, required price of all money owed reduced in size earlier than the war, and a quit to all retaliatory measures against.

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How could using ration stamps help the Allies win the war?

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Slogans such as “Food will win the war” compelled people to avoid wasting precious groceries and encouraged them to eat a multitude of fresh fruits and vegetables, which were too difficult to transport overseas.

how was the britain and japan industrialization different

Answers

The process of industrialization in Japan and Britain were different from each other on several factors such as timeline, rate of growth of industries, commercial and demographic developments, feasibility of trade etc.

While industries began to rise in Britain in beginning of eighteenth century, many technological advancements also rose which reduced the manpower requirement drastically. However, industrialization in Japan began in 1867 with the beginning of Meiji era. This hundred-year gap led to huge disparity in terms of machines and equipment that reached Japan from Europe. Japan being an island nation was hard hit by natural calamities frequently and large investments were to be made each time any calamity would occur. This also disturbed the trade in Japan. While on the other hand, Britain was fortunate enough in its trade routes, climate and working conditions. The colonies that Britain owned also helped it in providing huge amount of raw material and cheap labor easily which exponentially increased the pace of industrialization in Britain. Japan also struggled hard and worked day and night to accomplish this humungous task and it was found that rate of industrialization was faster in Japan than inn Britain.

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Have you heard of the Northwest Indian War? If not, why might this be?
Why do you think the Northwest Indian War has become one of America's "forgotten wars?"
How might the memory of the war be very different from the perspective of Indigenous Americans and how might we represent those experiences today?

Answers

Yes, I have heard of the Northwest Indian War. It has become one of America's "forgotten wars" as it was overshadowed by the American Revolution, it did not involve any major battles, and it was part of a larger struggle for control of the West.

The war memory may be different from Indigenous Americans perspective as it represented a part of long struggle against colonization and forced displacement.

The Northwest Indian War took place between 1785 and 1795 and was fought between Native American tribes and the United States over control of the Northwest Territory. The Northwest Indian War has become one of America's "forgotten wars" for a variety of reasons.

First, it was overshadowed by the American Revolution, which had just ended when the war began. Second, the war did not involve any major battles or heroic figures that captured the public's imagination. Third, it was part of a larger struggle for control of the West that continued for decades, so it was not seen as a decisive conflict in its own right.

The memory of the war would likely be very different from the perspective of Indigenous Americans. For them, the war was part of a long history of resistance to colonization and forced displacement. The war represented a threat to their way of life and their very survival, and its consequences were felt long after the fighting ended.

Today, we can represent those experiences by acknowledging the contributions and sacrifices of Indigenous people in the conflict, highlighting their perspectives and experiences, and working to address the ongoing legacy of colonization and oppression. We can also work to elevate Indigenous voices in our historical narratives and promote greater understanding and respect for their cultures and histories.

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How did the ancient Egyptians demonstrate their belief in life after death?

Answers

Answer:

They Mummified corpeses and laid them in tumbs full with riches

Explanation:

how did the attitudes of white soldiers change towards the 54th massachusetts regiment in the movie glory

Answers

The attitude of white soldiers towards the 54th Massachusetts regiment changed significantly from contempt to admiration throughout the movie glory. The movie "Glory" depicts the Civil War and the 54th Massachusetts Volunteer Infantry's formation, training, and battles.

This movie illustrates the struggles that African Americans encountered during the Civil War. The initial attitude of white soldiers towards the 54th Massachusetts regiment was contempt. The white soldiers' prejudiced and disrespectful attitude towards the black soldiers of the 54th regiment is highlighted in the movie. The white soldiers would even go to the extent of throwing dirt and insults at the regiment while marching in formation. The white soldiers were skeptical about black soldiers' abilities and their commitment to fighting for the Union. They didn't believe black soldiers could fight and win battles, and they didn't want to serve alongside them. As a result, the black soldiers were subjected to racism and discrimination.

However, after the Battle of Fort Wagner, the attitude of white soldiers changed towards the 54th Massachusetts regiment. The 54th Regiment's heroic effort and sacrifice during the battle amazed the white soldiers. The white soldiers admired the bravery and determination of the 54th regiment, and their contribution towards the Union's victory was highly valued. This transformation is evident when Colonel Shaw's commanding officer, who was initially prejudiced against the black soldiers, finally shows them respect and admiration when he witnesses their bravery in action.In conclusion, the attitudes of white soldiers towards the 54th Massachusetts regiment changed significantly from contempt to admiration throughout the movie "Glory."

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Why did Major George Washington and his troops surrender at Fort Necessity?

Answers

Jumonville's murder in captivity incited a strong French response, and Washington was unable to defend his makeshift Fort Necessity from French forces led by Jumonville's half-brother. Washington surrendered on July 4 and signed a confession—in French, which he could not read—to Jumonville's assassination.

Can someone please answer this, ill give you brainliest Would be very appreciated.

Answers

The answer is B, or Congress can use its veto power to overrule the Supreme Court’s decision.

Explanation:

The Supreme Court May veto a proposal by Congress if it is deemed unconstitutional. However, the proposal then goes right back to Congress. If 2/3 of the House of Representatives votes in favor of the proposal, it is passed regardless of the Supreme Court’s decision.

Answer:

C) Congress can rewrite the law so that it is no longer unconstitutional.

Explanation:

By rewriting the Act, Congress may be able to avoid violating the Constitution.

A statute that is declared unconstitutional by the Supreme Court must be reauthorized by Congress. Alternatively, Congress may establish a new legislation to replace the present one, or it could issue an executive order to reinstate the previous one. In addition, Congress has the option of taking its case to a federal court. As a result, they would be able to continue their work on that specific section of the constitution, but not alter its general validity.

which best explains the connection between ethnic diversity in the united states and support for neutrality during world war i?

Answers

The majority of the people in the United States were pacifists and originated from various European nations.

How did Russia participate in the American Civil War?

The Imperial Russian Navy dispatched two fleets to American waters during the winter of 1861–1862 in an effort to prevent them from becoming entrapped in case a war with Britain and France broke out. While many Americans at the time saw this as an intervention on the Union's behalf, several historians cast doubt on that claim.

How is the United States involved with Russia?

One of the most crucial, vital, and important international relationships in the world is that between the United States and Russia. Interests in space exploration, counterterrorism, nonproliferation, and nuclear safety and security are shared by the two countries. Washington, D.C., Russian Embassy

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What does Twain think of the men who worked on the barges?

Answers

Answer: He thinks they are rude, uneducated, and brave.

Explanation: I read the passage, look for context clues.

Why is the 1920s called the decade of Change?

Answers

The 1920s was a time of significant change in many aspects of society.

There were numerous technological advances, including the widespread adoption of automobiles, the development of radio and the advancement of aviation. In addition, the 1920s saw a number of cultural and social changes, including the rise of jazz music, the emergence of the "new woman," and the emergence of the "lost generation" of writers. The decade was also marked by political and economic changes, including the aftermath of World War I, the passage of Prohibition, and the beginning of the Great Depression. All of these factors contributed to the perception of the 1920s as a time of great change.

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ultra-orthodox israeli leaders accept converts to reform judaism. True/False

Answers

False. Ultra-Orthodox Israeli leaders do not generally accept converts to Reform Judaism.

Ultra-Orthodox Judaism, which is a conservative and traditional branch within Judaism, has a stricter interpretation of Jewish law and standards for conversion. They typically do not recognize conversions performed by non-Orthodox movements, including Reform Judaism. Ultra-Orthodox leaders typically require individuals seeking conversion to adhere to their specific religious practices and undergo a rigorous process that includes study, observance, and immersion in an Orthodox Jewish community. This can create tensions and differences in perspectives between Ultra-Orthodox and Reform Judaism regarding conversion and acceptance within the Jewish community.

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An economic*blank* of building a small courthouse instead of a large one is that it would require fewer materials.

Answers

An economic advantage of building a small courthouse instead of a large one is that it would require fewer materials.

What is one economic advantage of constructing a small courthouse?

Constructing a small courthouse instead of a large one offers the economic advantage of requiring fewer materials. A smaller building would need a reduced amount of construction materials such as bricks, cement, steel and other resources.

This translates into cost savings in terms of material procurement and transportation. The reduced material requirements can also lead to shorter construction timelines further reducing labor costs and potential delays.

Answers

Answer: They used slaves for agricultural and artisanal labor as well as domestic, sexual, reproductive, and military service.

Explanation:

i dont think you could put sexual, but try to read the paragraph they gave you and see!

what were the most significant events of world war 2

Answers

Answer:

Sept 1, 1939: Germany invades Poland, marking what may regard as the start of the war, though Japan invaded China on July 7, 1937. Two days later, France and the United Kingdom declare war on Germany.

April 9 to June 22, 1940: Germany takes control of much of Western Europe, including France.

July 10, 1940: Germany launches an air war, known as the Battle of Britain, against the United Kingdom.

Sept. 22, 1940: Germany, Italy and Japan sign the Tripartite Pact.

Dec. 7, 1941: Japan's naval air force attacks military bases on Oahu, Hawaii.

Dec. 8, 1941: The United States declares war against Japan.

Dec. 11, 1941: The United States declares was on Germany and Italy.

June 4 to 7, 1941: The U.S Navy defeats the Japanese navy at the Battle of Midway.

July 9, 1942: Allied forces invade Sicily.

Sept. 8, 1943: Italy surrenders to the Allies, but Germany forces occupy northern Italy.

June 6, 1944: Allied forces land on the beaches of Normandy, France, marking D-Day.

Aug. 25, 1944: Allies take control of Paris.

Dec. 16, 1944: Germans counterattack in northern France, Belgium and Luxembourg, known as the Battle of the Bulge.

Feb. 19. 1945: U.S. Marines land on the Japanese island of Iwo Jima.

March. 22, 1945: The U.S. 3rd Army crosses the Rhine River in Germany.

April. 1, 1945: U.S. soldiers and Marines invade Okinawa, Japan.

April. 25, 1945: The Soviet army encircles Berlin and links up with the Americans on the Elbe River.

May. 8, 1945: Germany surrenders to the Allies, marking V-E Day.

Aug. 6, 1945: The U.S. drops an atomic bomb on Hiroshima, Japan.

Aug. 9, 1945: The U.S. drops an atomic bomb on Nagasaki =, Japan.

Sept. 2, 1945: Japan formally surrenders to the Allies, marking V-J Day. although the initial announcement of surrender was made Aug. 15, 1945.

Explanation:

I majored in History

describe one way in which the document reflects the specific historical situation of spain’s maritime exploration and colonization in the late fifteenth and early sixteenth centuries

Answers

Christopher Columbus was given financial support by the Spanish Kings Ferdinand of Aragon and Isabella of Castile to travel to the West Indies to explore and find a new sea route.

How does the document reflect the specific historical situation of Spain's maritime exploration and colonization?

Paragraphs later, the document threatens the Native Indians of the area, saying: "But if you do not obey, we shall powerfully enter into your country, and shall make war against you, and shall subject you to the yoke and obedience of the Church and the king and queen of Spain."

This shows how arrogantly the Spanish monarchy believed it had the power to impose its will. On October 12, 1492, he made the actual discovery of the American Continent. The Spanish explorers intended to conquer and settle the new territories when they learned that they were rich in natural resources and raw materials. They also wanted to evangelize the Native Americans to promote Christianity.

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Summarize the political philosophy of John Locke.?

In political theory, or political philosophy, John Locke refuted the theory of the divine right of kings and argued that all persons are endowed with natural rights to life, liberty, and property and that rulers who fail to protect those rights may be removed by the people, by force if necessary

Answers

The summary of the political philosophy of John Locke is the dismissal of the divine right of kings and advocacy for natural rights.

Who was John Locke?

He was an English philosopher that was one of the fathers of Enlightenment thinking and considered the father of liberalism.

Hence, we can see that the divine right of kings was one that was popular in those times about the rulership rights that were transferred from generation to generation, but he advocated for natural rights.

Answers

Answer:

Because the French were never enslaved, unlike the Haitians.

Explanation:

Haiti was a territory enslaved by the French and the Spaniards and for that reason, its constitution is punctual around slavery, since this was a situation that Haitians had to go through. However, France was never enslaved and they do not know the problems that this type of system causes, as the French never suffered enslavement, but on the contrary they caused slavery in other territories, the French did not include an agenda on slaves and slavery in their declaration of human and citizen rights.

Why do you think the children call their father Atticus rather than "Dad"?

Answers

Answer: Its a way to respect him as an individual.

Explanation:

I believe the children call their father Atticus rather than "Dad" because Atticus is a respected figure in their community, and they want to emulate the same level of respect and admiration that others have for him.

Additionally, Atticus has instilled in his children a sense of maturity and responsibility, and using his formal title is a way for them to show that they understand and appreciate the gravity of his character. In the novel "To Kill a Mockingbird," the children, Scout and Jem, call their father Atticus rather than "Dad" because it reflects the respectful and open relationship they have with him. Atticus treats his children with maturity and encourages them to address him by his first name, fostering a sense of equality and trust within their family dynamic.

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WILL GIVE BRAINLIEST

Select ALL the correct answers.

Which two of the following are Latin American territories that Simón Bolívar helped to free from Spanish rule?

Mexico
Venezuela
Peru
Florida
Brazil

Answers

Answer:

The two answers are Peru and Venezuela

Answer:

I know one of them is Venezuela.

Which side, North or South, had the economic (supplies) advantage at the beginning of the Civil War
no links help pleaseeeeeeeeeee

Answers

Answer:

The North

Explanation:

The North at the beginning of the war had much more industural advantage.

The presence of this Mayan ruin indicates the significant influence of what class of people in Mayan culture?

A. Terrace farmers
B. Women
C. Merchants
D. Priests

Answers

The presence of this Mayan ruin indicates the significant influence of the priest class of people in Mayan culture. The correct option is d.

The ancient Mayans had a complex relationship among elites, such as kings and merchants, as well as commoners. The highest ancient Mayan social class encompassed a single centralised leader known as the king or Kuhul ajaw, who was usually a man but could be a woman on rare occasions. Religion and control over resources provided the king with power, which was reinforced through additional elites, including merchants. This faction of ancient Mayan social classes arose when some people gained greater access to resources compared to others, increased internal and external trade, and specialized in the manufacture and sale of goods.

The presence of this Mayan ruin indicates the significant influence of the priest class of people in Mayan culture.

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Answer:

Explanation:

the counter-culture of the 1950s and 1960s railed against the conformity of the cold war era. yet the counter-culture was, to a degree, channeled through the very consumer culture that young people sought to resist. advertisers commercialized resistance to commercialism.group of answer choicestruefalse

Answers

The answer is true. The counter-culture of the 1950s and 1960s sought to break free from the conformity and consumerism of the cold war era, but ironically, this counterculture was eventually commercialized and co-opted by the very industries and corporations they were trying to resist.

Advertisers realized that the youth were a powerful consumer demographic and began to market products and ideas that catered to their desires for rebellion and individuality. As a result, the counter-culture became increasingly entangled with commercialism, and many of the movements and values that emerged during this time were eventually commodified and sold back to the very people who originally sought to resist them.

This complex relationship between counter-culture and commercialism continues to play out in contemporary society, and it underscores the ways in which cultural movements can become co-opted and commodified by powerful economic forces.

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9. Why did the people/nations in Asia and Africa resist the colonizers
Could they have resisted more effectively?

Answers

Answer:When, rather late in the period of European colonial expansion, Europeans turned to Africa to satisfy their greed for resources, prestige, and empire,

Explanation:

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