(a) Interpretation: Whether MES, MOPS or HEPS is effective at pH 7.0 should be determined. Concept introduction: The effectiveness of a buffer can be determined by the fact that the pH values and the p K a lies close to each other. If this value is not close the buffer will not be effective.

Question

Be sure to answer all parts. Tris [tris(hydroxymethyl)aminomethane] is a common buffer for studying biological systems. (K, = 5.01 x 109 and pk, 8.3) %3D %3D (a) Calculate the pH of the Tris buffer after mixing 10.5 mL of 0.20 M HCI solution with 25.0 mL of 0.10 M Tris. 7.06 (b) This buffer was used to study an enzyme-catalyzed reaction. As a result of the reaction, 0.00020 mol of H* was produced. What is the pH of the buffer at the end of the reaction? (c) What would be the final pH if no buffer were present?

Answer 1

Question

Chapter 1, Problem 28P

Interpretation Introduction

(a)

Interpretation:

Whether MES, MOPS or HEPS is effective at pH 7.0 should be determined.

Concept introduction:

The effectiveness of a buffer can be determined by the fact that the pH values and the pKa lies close to each other. If this value is not close the buffer will not be effective.

Interpretation Introduction

(b)

Interpretation:

Whether MES, MOPS or HEPS is effective at pH 6.0 should be determined.

Concept introduction:

The effectiveness of a buffer can be determined by the fact that the pH values and the pKa lies close to each other. If this value is not close the buffer will not be effective.

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Be sure to answer all parts. Tris [tris(hydroxymethyl)aminomethane] is a common buffer for studying biological systems. (K, = 5.01 x 109 and pk, 8.3) %3D %3D (a) Calculate the pH of the Tris buffer after mixing 10.5 mL of 0.20 M HCI solution with 25.0 mL of 0.10 M Tris. 7.06 (b) This buffer was used to study an enzyme-catalyzed reaction. As a result of the reaction, 0.00020 mol of H* was produced. What is the pH of the buffer at the end of the reaction? (c) What would be the final pH if no buffer were present?

Need help, please. Why is the answer 9.33? Please show all steps/work.

Be sure to answer all parts. What are [H3O+], [OH], and pH in a solution with a pOH of 9.03? Make sure your answers are given to the correct number of significant figures. [H3O]= × 10

Answer 2

Question

Chapter 1, Problem 28P

Interpretation Introduction

(a)

Interpretation:

Whether MES, MOPS or HEPS is effective at pH 7.0 should be determined.

Concept introduction:

The effectiveness of a buffer can be determined by the fact that the pH values and the pKa lies close to each other. If this value is not close the buffer will not be effective.

Interpretation Introduction

(b)

Interpretation:

Whether MES, MOPS or HEPS is effective at pH 6.0 should be determined.

Concept introduction:

The effectiveness of a buffer can be determined by the fact that the pH values and the pKa lies close to each other. If this value is not close the buffer will not be effective.

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Answer 3

Question

Chapter 1, Problem 28P

Interpretation Introduction

(a)

Interpretation:

Whether MES, MOPS or HEPS is effective at pH 7.0 should be determined.

Concept introduction:

The effectiveness of a buffer can be determined by the fact that the pH values and the pKa lies close to each other. If this value is not close the buffer will not be effective.

Interpretation Introduction

(b)

Interpretation:

Whether MES, MOPS or HEPS is effective at pH 6.0 should be determined.

Concept introduction:

The effectiveness of a buffer can be determined by the fact that the pH values and the pKa lies close to each other. If this value is not close the buffer will not be effective.

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Answer 4

Question

Chapter 1, Problem 28P

Interpretation Introduction

(a)

Interpretation:

Whether MES, MOPS or HEPS is effective at pH 7.0 should be determined.

Concept introduction:

The effectiveness of a buffer can be determined by the fact that the pH values and the pKa lies close to each other. If this value is not close the buffer will not be effective.

Interpretation Introduction

(b)

Interpretation:

Whether MES, MOPS or HEPS is effective at pH 6.0 should be determined.

Concept introduction:

The effectiveness of a buffer can be determined by the fact that the pH values and the pKa lies close to each other. If this value is not close the buffer will not be effective.

Expert Solution & Answer

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Answer 5

Chapter 1, Problem 28P

Interpretation Introduction

(a)

Interpretation:

Whether MES, MOPS or HEPS is effective at pH 7.0 should be determined.

Concept introduction:

The effectiveness of a buffer can be determined by the fact that the pH values and the pKa lies close to each other. If this value is not close the buffer will not be effective.

Interpretation Introduction

(b)

Interpretation:

Whether MES, MOPS or HEPS is effective at pH 6.0 should be determined.

Concept introduction:

The effectiveness of a buffer can be determined by the fact that the pH values and the pKa lies close to each other. If this value is not close the buffer will not be effective.

Answer 6

Chapter 1, Problem 28P

Interpretation Introduction

(a)

Interpretation:

Whether MES, MOPS or HEPS is effective at pH 7.0 should be determined.

Concept introduction:

The effectiveness of a buffer can be determined by the fact that the pH values and the pKa lies close to each other. If this value is not close the buffer will not be effective.

Answer 7

Chapter 1, Problem 28P

Interpretation Introduction

(a)

Interpretation:

Whether MES, MOPS or HEPS is effective at pH 7.0 should be determined.

Concept introduction:

The effectiveness of a buffer can be determined by the fact that the pH values and the pKa lies close to each other. If this value is not close the buffer will not be effective.

Answer 8

Interpretation Introduction

(b)

Interpretation:

Whether MES, MOPS or HEPS is effective at pH 6.0 should be determined.

Concept introduction:

The effectiveness of a buffer can be determined by the fact that the pH values and the pKa lies close to each other. If this value is not close the buffer will not be effective.

Answer 9

Interpretation Introduction

(b)

Interpretation:

Whether MES, MOPS or HEPS is effective at pH 6.0 should be determined.

Concept introduction:

The effectiveness of a buffer can be determined by the fact that the pH values and the pKa lies close to each other. If this value is not close the buffer will not be effective.

Answer 10

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Answer 11

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Answer 13

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Answer 14

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Answer 15

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Answer 21

Ch. 1 - Prob. 1P Ch. 1 - Prob. 2P Ch. 1 - Prob. 3P Ch. 1 - Prob. 4P Ch. 1 - Prob. 5P Ch. 1 - Prob. 6P Ch. 1 - Prob. 7P Ch. 1 - Prob. 8P Ch. 1 - Prob. 9P Ch. 1 - Prob. 10P

(a) Interpretation: Whether MES, MOPS or HEPS is effective at pH 7.0 should be determined. Concept introduction: The effectiveness of a buffer can be determined by the fact that the pH values and the p K a lies close to each other. If this value is not close the buffer will not be effective.

(a) Interpretation: Whether MES, MOPS or HEPS is effective at pH 7.0 should be determined. Concept introduction: The effectiveness of a buffer can be determined by the fact that the pH values and the pKa lies close to each other. If this value is not close the buffer will not be effective.

(b) Interpretation: Whether MES, MOPS or HEPS is effective at pH 6.0 should be determined. Concept introduction: The effectiveness of a buffer can be determined by the fact that the pH values and the pKa lies close to each other. If this value is not close the buffer will not be effective.

Chapter 1 Solutions

(a)

Interpretation:

Whether MES, MOPS or HEPS is effective at pH 7.0 should be determined.

Concept introduction:

The effectiveness of a buffer can be determined by the fact that the pH values and the pKa lies close to each other. If this value is not close the buffer will not be effective.

(b)

Interpretation:

Whether MES, MOPS or HEPS is effective at pH 6.0 should be determined.

Concept introduction:

The effectiveness of a buffer can be determined by the fact that the pH values and the pKa lies close to each other. If this value is not close the buffer will not be effective.