   Chapter 15, Problem 57E

Chapter
Section
Textbook Problem

# Consider the titration of 40.0 mL of 0.200 M HClO4 by 0.100 M KOH. Calculate the pH of the resulting solution after the following volumes of KOH have been added.a. 0.0 mLb. 10.0 mLc. 40.0 mLd. 80.0 mLe. 100.0 mL

(a)

Interpretation Introduction

Interpretation:

The titration concentration of KOH , volume and concentration of HClO4 is given. The pH of resulting solution after the addition of KOH is to be calculated for the given volumes of KOH .

Concept introduction:

Titration is a process to determine the concentration of an unknown solution with the help of a solution of a known concentration value.

The pH is calculated using the formula,

pH=log10[H+]

The relation between pH and pOH is,

pH+pOH=14

To determine the pH of the resulting solution, after the addition of 0.0mL of KOH .

Explanation

Explanation

Given

Concentration of HClO4 is 0.200M .

HClO4 is a strong acid; hence, it completely dissociates into ions. The major species present in the solution are H+,ClO4 and H2O .

The pH is determined by [H+] present in the solution.

Since HClO4 completely dissociates into ions, 0.200M HClO4 contains 0.200M H+

(b)

Interpretation Introduction

Interpretation:

The titration concentration of KOH , volume and concentration of HClO4 is given. The pH of resulting solution after the addition of KOH is to be calculated for the given volumes of KOH .

Concept introduction:

Titration is a process to determine the concentration of an unknown solution with the help of a solution of a known concentration value.

The pH is calculated using the formula,

pH=log10[H+]

The relation between pH and pOH is,

pH+pOH=14

To determine the concentration of H+

(c)

Interpretation Introduction

Interpretation:

The titration concentration of KOH , volume and concentration of HClO4 is given. The pH of resulting solution after the addition of KOH is to be calculated for the given volumes of KOH .

Concept introduction:

Titration is a process to determine the concentration of an unknown solution with the help of a solution of a known concentration value.

The pH is calculated using the formula,

pH=log10[H+]

The relation between pH and pOH is,

pH+pOH=14

(d)

Interpretation Introduction

Interpretation:

The titration concentration of KOH , volume and concentration of HClO4 is given. The pH of resulting solution after the addition of KOH is to be calculated for the given volumes of KOH .

Concept introduction:

Titration is a process to determine the concentration of an unknown solution with the help of a solution of a known concentration value.

The pH is calculated using the formula,

pH=log10[H+]

The relation between pH and pOH is,

pH+pOH=14

(e)

Interpretation Introduction

Interpretation:

The titration concentration of KOH , volume and concentration of HClO4 is given. The pH of resulting solution after the addition of KOH is to be calculated for the given volumes of KOH .

Concept introduction:

Titration is a process to determine the concentration of an unknown solution with the help of a solution of a known concentration value.

The pH is calculated using the formula,

pH=log10[H+]

The relation between pH and pOH is,

pH+pOH=14

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