Biochemistry: Concepts and Connections
Biochemistry: Concepts and Connections
1st Edition
ISBN: 9780321839923
Author: Dean R. Appling, Spencer J. Anthony-Cahill, Christopher K. Mathews
Publisher: PEARSON
Question
Book Icon
Chapter 2, Problem 5P
Interpretation Introduction

(a) Interpretation:

The pH of a 1 M NH4Cl solution should be calculated.

Concept Introduction:

For a weak acid or a weak base, the dissociation reaction is in equilibrium and the equilibrium constant is known as acid or base dissociation constant. For such a solution, concentration of each species is calculated using ICE table.

The pH of solution is calculated as follows:

    pH=log[H+]

Here, [H+] is concentration of hydrogen ions in the solution.

Interpretation Introduction

(b) Interpretation:

The pH of solution resulting from addition of 10 mL of a 1 M NaOH to 40 mL of 1 M NH4Cl.

Concept Introduction:

For a buffer solution, pH is calculated using Henderson-Hasselbalch equation as follows:

    pH=pKa+log[Conjugate base][acid]

Here, pH is log[H+] of solution and pKa is -log(Ka) of weak acid.

Interpretation Introduction

(c) Interpretation:

The pH of the solution that results from the addition of 30 mL of 1 M NaOH to 40 mL of 1 M NH4Cl.

Concept Introduction:

For a buffer solution, pH is calculated using Henderson-Hasselbalch equation as follows:

    pH=pKa+log[Conjugate base][acid]

Here, pH is log[H+] of solution and pKa is -log(Ka) of weak acid.

Blurred answer
Knowledge Booster
Background pattern image
Recommended textbooks for you
Text book image
Biochemistry
Biochemistry
ISBN:9781319114671
Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher:W. H. Freeman
Text book image
Lehninger Principles of Biochemistry
Biochemistry
ISBN:9781464126116
Author:David L. Nelson, Michael M. Cox
Publisher:W. H. Freeman
Text book image
Fundamentals of Biochemistry: Life at the Molecul...
Biochemistry
ISBN:9781118918401
Author:Donald Voet, Judith G. Voet, Charlotte W. Pratt
Publisher:WILEY
Text book image
Biochemistry
Biochemistry
ISBN:9781305961135
Author:Mary K. Campbell, Shawn O. Farrell, Owen M. McDougal
Publisher:Cengage Learning
Text book image
Biochemistry
Biochemistry
ISBN:9781305577206
Author:Reginald H. Garrett, Charles M. Grisham
Publisher:Cengage Learning
Text book image
Fundamentals of General, Organic, and Biological ...
Biochemistry
ISBN:9780134015187
Author:John E. McMurry, David S. Ballantine, Carl A. Hoeger, Virginia E. Peterson
Publisher:PEARSON