(a) Interpretation: Using the buffer index expression, the value of the buffer index for acetic acid buffer needs to be determined. Concept introduction: The buffer index is defined as the ratio of the increase in the concentration/amount of the strong acid or base added to the buffer with a change in the pH value. When a strong acid or base is added to the buffer solution, the change in the buffer index can be represented as follows: β = Δ c b Δ pH Here, Δ c b is the change in the concentration of the buffer and Δ pH is the change in the pH value.

Question

You are given a 27 % (w/v) solution of psicose. Molar mass: psicose (C6H12O6) = 180.156 g/mol. You dissolve 6.31 g of potassium formate in 250 mL of 0.25 M formic acid (HCOOH). This solution was then made up to a total volume of 500 mL with distilled water. Potassium formate (KHCO2): molar mass = 84.12 g/mol Calculate the pH of this solution given the pKa of formic acid = 3.77.

Answer 1

Question

Chapter 17, Problem 91IAE

Interpretation Introduction

(a)

Interpretation:

Using the buffer index expression, the value of the buffer index for acetic acid buffer needs to be determined.

Concept introduction:

The buffer index is defined as the ratio of the increase in the concentration/amount of the strong acid or base added to the buffer with a change in the pH value. When a strong acid or base is added to the buffer solution, the change in the buffer index can be represented as follows:

β=ΔcbΔpH

Here, Δcb is the change in the concentration of the buffer and ΔpH is the change in the pH value.

Interpretation Introduction

(b)

Interpretation:

The pH of the buffer after the addition of strong acid needs to be determined.

Concept introduction:

The buffer index is defined as the ratio of the increase in the concentration/amount of the strong acid or base added to the buffer with a change in the pH value. When a strong acid or base is added to the buffer solution, the change in the buffer index can be represented as follows:

β=ΔcbΔpH

Here, Δcb is the change in the concentration of the buffer and ΔpH is the change in the pH value.

Interpretation Introduction

(c)

Interpretation:

A graph between buffer index and pH needs to be plotted indicating the minimum and maximum buffer indices.

Concept introduction:

The buffer index is defined as the ratio of the increase in the concentration/amount of the strong acid or base added to the buffer with a change in the pH value. When a strong acid or base is added to the buffer solution, the change in the buffer index can be represented as follows:

β=ΔcbΔpH

Here, Δcb is the change in the concentration of the buffer and ΔpH is the change in the pH value.

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You are given a 27 % (w/v) solution of psicose. Molar mass: psicose (C6H12O6) = 180.156 g/mol. You dissolve 6.31 g of potassium formate in 250 mL of 0.25 M formic acid (HCOOH). This solution was then made up to a total volume of 500 mL with distilled water. Potassium formate (KHCO2): molar mass = 84.12 g/mol Calculate the pH of this solution given the pKa of formic acid = 3.77.

Explain the difference between 'stoichiometric (equivalence) point' and 'end point' in the context of a titration.

Define and explain the significance of the equivalence point of a titration. Identify the role of the indicator in this context.

Answer 2

Question

Chapter 17, Problem 91IAE

Interpretation Introduction

(a)

Interpretation:

Using the buffer index expression, the value of the buffer index for acetic acid buffer needs to be determined.

Concept introduction:

The buffer index is defined as the ratio of the increase in the concentration/amount of the strong acid or base added to the buffer with a change in the pH value. When a strong acid or base is added to the buffer solution, the change in the buffer index can be represented as follows:

β=ΔcbΔpH

Here, Δcb is the change in the concentration of the buffer and ΔpH is the change in the pH value.

Interpretation Introduction

(b)

Interpretation:

The pH of the buffer after the addition of strong acid needs to be determined.

Concept introduction:

The buffer index is defined as the ratio of the increase in the concentration/amount of the strong acid or base added to the buffer with a change in the pH value. When a strong acid or base is added to the buffer solution, the change in the buffer index can be represented as follows:

β=ΔcbΔpH

Here, Δcb is the change in the concentration of the buffer and ΔpH is the change in the pH value.

Interpretation Introduction

(c)

Interpretation:

A graph between buffer index and pH needs to be plotted indicating the minimum and maximum buffer indices.

Concept introduction:

The buffer index is defined as the ratio of the increase in the concentration/amount of the strong acid or base added to the buffer with a change in the pH value. When a strong acid or base is added to the buffer solution, the change in the buffer index can be represented as follows:

β=ΔcbΔpH

Here, Δcb is the change in the concentration of the buffer and ΔpH is the change in the pH value.

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Answer 3

Question

Chapter 17, Problem 91IAE

Interpretation Introduction

(a)

Interpretation:

Using the buffer index expression, the value of the buffer index for acetic acid buffer needs to be determined.

Concept introduction:

The buffer index is defined as the ratio of the increase in the concentration/amount of the strong acid or base added to the buffer with a change in the pH value. When a strong acid or base is added to the buffer solution, the change in the buffer index can be represented as follows:

β=ΔcbΔpH

Here, Δcb is the change in the concentration of the buffer and ΔpH is the change in the pH value.

Interpretation Introduction

(b)

Interpretation:

The pH of the buffer after the addition of strong acid needs to be determined.

Concept introduction:

The buffer index is defined as the ratio of the increase in the concentration/amount of the strong acid or base added to the buffer with a change in the pH value. When a strong acid or base is added to the buffer solution, the change in the buffer index can be represented as follows:

β=ΔcbΔpH

Here, Δcb is the change in the concentration of the buffer and ΔpH is the change in the pH value.

Interpretation Introduction

(c)

Interpretation:

A graph between buffer index and pH needs to be plotted indicating the minimum and maximum buffer indices.

Concept introduction:

The buffer index is defined as the ratio of the increase in the concentration/amount of the strong acid or base added to the buffer with a change in the pH value. When a strong acid or base is added to the buffer solution, the change in the buffer index can be represented as follows:

β=ΔcbΔpH

Here, Δcb is the change in the concentration of the buffer and ΔpH is the change in the pH value.

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Answer 4

Question

Chapter 17, Problem 91IAE

Interpretation Introduction

(a)

Interpretation:

Using the buffer index expression, the value of the buffer index for acetic acid buffer needs to be determined.

Concept introduction:

The buffer index is defined as the ratio of the increase in the concentration/amount of the strong acid or base added to the buffer with a change in the pH value. When a strong acid or base is added to the buffer solution, the change in the buffer index can be represented as follows:

β=ΔcbΔpH

Here, Δcb is the change in the concentration of the buffer and ΔpH is the change in the pH value.

Interpretation Introduction

(b)

Interpretation:

The pH of the buffer after the addition of strong acid needs to be determined.

Concept introduction:

The buffer index is defined as the ratio of the increase in the concentration/amount of the strong acid or base added to the buffer with a change in the pH value. When a strong acid or base is added to the buffer solution, the change in the buffer index can be represented as follows:

β=ΔcbΔpH

Here, Δcb is the change in the concentration of the buffer and ΔpH is the change in the pH value.

Interpretation Introduction

(c)

Interpretation:

A graph between buffer index and pH needs to be plotted indicating the minimum and maximum buffer indices.

Concept introduction:

The buffer index is defined as the ratio of the increase in the concentration/amount of the strong acid or base added to the buffer with a change in the pH value. When a strong acid or base is added to the buffer solution, the change in the buffer index can be represented as follows:

β=ΔcbΔpH

Here, Δcb is the change in the concentration of the buffer and ΔpH is the change in the pH value.

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Answer 5

Chapter 17, Problem 91IAE

Interpretation Introduction

(a)

Interpretation:

Using the buffer index expression, the value of the buffer index for acetic acid buffer needs to be determined.

Concept introduction:

The buffer index is defined as the ratio of the increase in the concentration/amount of the strong acid or base added to the buffer with a change in the pH value. When a strong acid or base is added to the buffer solution, the change in the buffer index can be represented as follows:

β=ΔcbΔpH

Here, Δcb is the change in the concentration of the buffer and ΔpH is the change in the pH value.

Interpretation Introduction

(b)

Interpretation:

The pH of the buffer after the addition of strong acid needs to be determined.

Concept introduction:

The buffer index is defined as the ratio of the increase in the concentration/amount of the strong acid or base added to the buffer with a change in the pH value. When a strong acid or base is added to the buffer solution, the change in the buffer index can be represented as follows:

β=ΔcbΔpH

Here, Δcb is the change in the concentration of the buffer and ΔpH is the change in the pH value.

Interpretation Introduction

(c)

Interpretation:

A graph between buffer index and pH needs to be plotted indicating the minimum and maximum buffer indices.

Concept introduction:

The buffer index is defined as the ratio of the increase in the concentration/amount of the strong acid or base added to the buffer with a change in the pH value. When a strong acid or base is added to the buffer solution, the change in the buffer index can be represented as follows:

β=ΔcbΔpH

Here, Δcb is the change in the concentration of the buffer and ΔpH is the change in the pH value.

Answer 6

Chapter 17, Problem 91IAE

Interpretation Introduction

(a)

Interpretation:

Using the buffer index expression, the value of the buffer index for acetic acid buffer needs to be determined.

Concept introduction:

The buffer index is defined as the ratio of the increase in the concentration/amount of the strong acid or base added to the buffer with a change in the pH value. When a strong acid or base is added to the buffer solution, the change in the buffer index can be represented as follows:

β=ΔcbΔpH

Here, Δcb is the change in the concentration of the buffer and ΔpH is the change in the pH value.

Answer 7

Chapter 17, Problem 91IAE

Interpretation Introduction

(a)

Interpretation:

Using the buffer index expression, the value of the buffer index for acetic acid buffer needs to be determined.

Concept introduction:

The buffer index is defined as the ratio of the increase in the concentration/amount of the strong acid or base added to the buffer with a change in the pH value. When a strong acid or base is added to the buffer solution, the change in the buffer index can be represented as follows:

β=ΔcbΔpH

Here, Δcb is the change in the concentration of the buffer and ΔpH is the change in the pH value.

Answer 8

Interpretation Introduction

(b)

Interpretation:

The pH of the buffer after the addition of strong acid needs to be determined.

Concept introduction:

The buffer index is defined as the ratio of the increase in the concentration/amount of the strong acid or base added to the buffer with a change in the pH value. When a strong acid or base is added to the buffer solution, the change in the buffer index can be represented as follows:

β=ΔcbΔpH

Here, Δcb is the change in the concentration of the buffer and ΔpH is the change in the pH value.

Answer 9

Interpretation Introduction

(b)

Interpretation:

The pH of the buffer after the addition of strong acid needs to be determined.

Concept introduction:

The buffer index is defined as the ratio of the increase in the concentration/amount of the strong acid or base added to the buffer with a change in the pH value. When a strong acid or base is added to the buffer solution, the change in the buffer index can be represented as follows:

β=ΔcbΔpH

Here, Δcb is the change in the concentration of the buffer and ΔpH is the change in the pH value.

Answer 10

Interpretation Introduction

(c)

Interpretation:

A graph between buffer index and pH needs to be plotted indicating the minimum and maximum buffer indices.

Concept introduction:

The buffer index is defined as the ratio of the increase in the concentration/amount of the strong acid or base added to the buffer with a change in the pH value. When a strong acid or base is added to the buffer solution, the change in the buffer index can be represented as follows:

β=ΔcbΔpH

Here, Δcb is the change in the concentration of the buffer and ΔpH is the change in the pH value.

Answer 11

Interpretation Introduction

(c)

Interpretation:

A graph between buffer index and pH needs to be plotted indicating the minimum and maximum buffer indices.

Concept introduction:

The buffer index is defined as the ratio of the increase in the concentration/amount of the strong acid or base added to the buffer with a change in the pH value. When a strong acid or base is added to the buffer solution, the change in the buffer index can be represented as follows:

β=ΔcbΔpH

Here, Δcb is the change in the concentration of the buffer and ΔpH is the change in the pH value.

Answer 12

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Answer 23

Ch. 17 - For a solution that e 0.275M CH2CH2 COOH...Ch. 17 - For a solution that is 0164 U NH2 and 0.102MNH4Cl...Ch. 17 - Prob. 3E Ch. 17 - In Example 16-4, we calculated the percent...Ch. 17 - Calculate [H2OOH-] in a solution that is (a)...Ch. 17 - Calculate [OH-] in a solution that is (a) 0.0062 U...Ch. 17 - What concentration of formate ion, [HCOO-], should...Ch. 17 - What concentration of ammonia. [NH2] , should be...Ch. 17 - Calculate the pH of a buffer that is a. 0.012 M...Ch. 17 - Lactic acid, CH2CH(OH)COOH , is found in sour...

Solution Summary: The author explains the value of the buffer index for acetic acid buffer.

Chapter 17 Solutions