   # Calculate the pH of each of the following buffered solutions. a. 0.50 M C 2 H 5 NH 2 /0.25 M C 2 H 5 NH 3 Cl b. 0.25 M C 2 H 5 NH 2 /0.50 M C 2 H 5 NH 3 Cl c. 0.50 M C 2 H 5 NH 2 /0.50 M C 2 H 5 NH 3 Cl ### Chemistry: An Atoms First Approach

2nd Edition
Steven S. Zumdahl + 1 other
Publisher: Cengage Learning
ISBN: 9781305079243

#### Solutions

Chapter
Section ### Chemistry: An Atoms First Approach

2nd Edition
Steven S. Zumdahl + 1 other
Publisher: Cengage Learning
ISBN: 9781305079243
Chapter 14, Problem 36E
Textbook Problem
1 views

## Calculate the pH of each of the following buffered solutions.a. 0.50 M C2H5NH2/0.25 M C2H5NH3Clb. 0.25 M C2H5NH2/0.50 M C2H5NH3Clc. 0.50 M C2H5NH2/0.50 M C2H5NH3Cl

(a)

Interpretation Introduction

Interpretation: The pH value of the given buffered solutions is to be calculated.

Concept introduction: The pOH value is the measure of OH ions. The relation between pOH and pKb is given by Henderson-Hassel Bach equation. According to this equation,

pOH=pKb+log[Conjugateacid][Weakbase]

### Explanation of Solution

Explanation

To determine the pOH value

The concentration of C2H5NH2 is 0.10M .

The concentration of C2H5NH3Cl is 0.25M .

The value of Kb for C2H5NH2 is 5.6×104 .

The pOH is calculated using the Henderson-Hassel Bach equation,

pOH=pKb+log[Conjugateacid][Weakbase] (1)

Where,

• pOH is the measure of OH ions.
• pKb is the measure of basic strength.

The formula of pKb is,

pKb=logKb

Where,

• Kb is base equilibrium constant.

Substitute the value of pKb in equation (1).

pOH=logKb+log[Conjugateacid][Weakbase]

Substitute all the given values in the above equation

(b)

Interpretation Introduction

Interpretation: The pH value of the given buffered solutions is to be calculated.

Concept introduction: The pOH value is the measure of OH ions. The relation between pOH and pKb is given by Henderson-Hassel Bach equation. According to this equation,

pOH=pKb+log[Conjugateacid][Weakbase]

(c)

Interpretation Introduction

Interpretation: The pH value of the given buffered solutions is to be calculated.

Concept introduction: The pOH value is the measure of OH ions. The relation between pOH and pKb is given by Henderson-Hassel Bach equation. According to this equation,

pOH=pKb+log[Conjugateacid][Weakbase]

### Still sussing out bartleby?

Check out a sample textbook solution.

See a sample solution

#### The Solution to Your Study Problems

Bartleby provides explanations to thousands of textbook problems written by our experts, many with advanced degrees!

Get Started

Find more solutions based on key concepts
Energy-yielding nutrients include all of the following except. a. vitamins b. carbohydrates c. fat d. protein

Nutrition: Concepts and Controversies - Standalone book (MindTap Course List)

How might nutritional genomics influence health care in the future?

Understanding Nutrition (MindTap Course List)

Where would you expect storms to develop?

Fundamentals of Physical Geography

How Do We Know? Why is it important that a hypothesis make testable predictions?

Horizons: Exploring the Universe (MindTap Course List)

Consider the physical pendulum of Figure 15.16. (a) Represent its moment of inertia about an axis passing throu...

Physics for Scientists and Engineers, Technology Update (No access codes included)

What is the deep scattering layer?

Oceanography: An Invitation To Marine Science, Loose-leaf Versin

Describe diffusion in terms or entropy.

Biology: The Unity and Diversity of Life (MindTap Course List) 