Week 35, Chemistry 4, Task 1, Sec. 18.5 The pH of a Mixture of Weak Acids and the Percent Dissociation”

Posljednje ažuriranje about 6 years ago

Chapter 13: Acids and Bases

Chemistry 4, Task 1: Section 13.5: Calculating the pH of Weak Acid Solutions Part 2: Mixture of Weak Acids and Percent Dissociation of Acids.

Task 1: Due on Monday, Apr. 27, 2020

By the end of this task, you will be able to:

Calculate the pH of a mixture of weak acids.
Calculate the percent dissociation of acids.
Calculate the Ka using percent dissociation.

Week 35, Chemistry 4, Task 1, Sec. 18.5 The pH of a Mixture of Weak Acids and the Percent Dissociation”

Posljednje ažuriranje about 6 years ago

Chapter 13: Acids and Bases

Chemistry 4, Task 1: Section 13.5: Calculating the pH of Weak Acid Solutions Part 2: Mixture of Weak Acids and Percent Dissociation of Acids.

Task 1: Due on Monday, Apr. 27, 2020

By the end of this task, you will be able to:

Calculate the pH of a mixture of weak acids.
Calculate the percent dissociation of acids.
Calculate the Ka using percent dissociation.

Watch the attached video recording titled “pH of a Mixture of Weak Acids” to understand how to calculate the pH when two or more weak acids are mixed. Then, answer the questions that follow.

Use the values of Ka from the table below:

Watch the attached video recording titled “Percent Dissociation of Acids” to understand how to calculate the percentage by which an acid will ionize. Then, answer the questions that follow.

Calculate the percent dissociation of acetic acid for each of the following concentrations:
a. 0.50 M CH₃COOH
b. 0.05 M CH₃COOH
2. Compare and deduce the impact of diluting an acid on its dissociation.

Watch the attached video recording titled “How to Calculate Ka Using Percent Dissociation” to understand how the percent dissociation of an acid could be used in order to calculate the acid dissociation constant Ka. Then, answer the questions that follow.

Note: Use this reaction to represent the dissociation of the weak acid:
HA _(aq)↔️H+⁺ A -⁽_^aq)

Assess your level of confidence regarding your understanding of this task.

1- Least confident: I did not understand the lesson.

2- Slightly unconfident: I did not understand many areas of the lesson.

3- Slightly confident: I understood the lesson but I need a lot of practice.

4- Confident: I understood the lesson well but I need a little more practice.

5- Highly confident: I mastered the topic very well.

Week 35, Chemistry 4, Task 1, Sec. 18.5 The pH of a Mixture of Weak Acids and the Percent Dissociation”

Week 35, Chemistry 4, Task 1, Sec. 18.5 The pH of a Mixture of Weak Acids and the Percent Dissociation”

Use the values of Ka from the table below:

Calculate the percent dissociation of acetic acid for each of the following concentrations:
a. 0.50 M CH₃COOH
b. 0.05 M CH₃COOH
2. Compare and deduce the impact of diluting an acid on its dissociation.

Note: Use this reaction to represent the dissociation of the weak acid:
HA _(aq)↔️H+⁺ A -⁽_^aq)

Assess your level of confidence regarding your understanding of this task.

If you have any question about this task, please type it below to discuss it during the live session.

Use the values of Ka from the table below:

Calculate the percent dissociation of acetic acid for each of the following concentrations:
a. 0.50 M CH₃COOH
b. 0.05 M CH₃COOH
2. Compare and deduce the impact of diluting an acid on its dissociation.

Note: Use this reaction to represent the dissociation of the weak acid:
HA _(aq)↔️H+⁺ A -⁽_^aq)

Assess your level of confidence regarding your understanding of this task.

If you have any question about this task, please type it below to discuss it during the live session.

Week 35, Chemistry 4, Task 1, Sec. 18.5 The pH of a Mixture of Weak Acids and the Percent Dissociation”

Week 35, Chemistry 4, Task 1, Sec. 18.5 The pH of a Mixture of Weak Acids and the Percent Dissociation”

Use the values of Ka from the table below:

Calculate the percent dissociation of acetic acid for each of the following concentrations:a. 0.50 M CH3COOHb. 0.05 M CH3COOH2. Compare and deduce the impact of diluting an acid on its dissociation.

Note: Use this reaction to represent the dissociation of the weak acid:HA (aq) ↔️H+ + A - (aq)

Assess your level of confidence regarding your understanding of this task.

If you have any question about this task, please type it below to discuss it during the live session.

Use the values of Ka from the table below:

Calculate the percent dissociation of acetic acid for each of the following concentrations:a. 0.50 M CH3COOHb. 0.05 M CH3COOH2. Compare and deduce the impact of diluting an acid on its dissociation.

Note: Use this reaction to represent the dissociation of the weak acid:HA (aq) ↔️H+ + A - (aq)

Assess your level of confidence regarding your understanding of this task.

If you have any question about this task, please type it below to discuss it during the live session.

Calculate the percent dissociation of acetic acid for each of the following concentrations:
a. 0.50 M CH₃COOH
b. 0.05 M CH₃COOH
2. Compare and deduce the impact of diluting an acid on its dissociation.

Note: Use this reaction to represent the dissociation of the weak acid:
HA _(aq)↔️H+⁺ A -⁽_^aq)

Calculate the percent dissociation of acetic acid for each of the following concentrations:
a. 0.50 M CH₃COOH
b. 0.05 M CH₃COOH
2. Compare and deduce the impact of diluting an acid on its dissociation.

Note: Use this reaction to represent the dissociation of the weak acid:
HA _(aq)↔️H+⁺ A -⁽_^aq)