   Chapter 15, Problem 15Q

Chapter
Section
Textbook Problem

# Figure 14-4 shows the pH curves for the titrations of six different acids by NaOH. Make a similar plot for the titration of three different bases by 0.10 M HCl. Assume 50.0 mL of 0.20 M of the bases and assume the three bases are a strong base (KOH), a weak base with Kb = 1 × 10−5, and another weak base with Kb = 1 × 10−10.

Interpretation Introduction

Interpretation: The titration curve of three different bases by 0.10M HCl is to be plotted.

Concept introduction: The titration between an acid and base is used for the determination of an acid or a base by neutralizing the given acid or base with an acid or base of known concentration. When the moles of a standard solution becomes equal to the moles of unknown concentration solution then the equivalence point is reached.

To determine: The titration curve of three different bases by 0.10M HCl .

Explanation

Explanation

Given

The concentration of HCl is 0.10M .

The concentration of base is 0.20M .

The volume of the solution of base is 50.0mL .

The given strong base is KOH .

The value of Kb for a weak base is 1×105 .

The value of Kb for a another weak base is 1×1010 .

The pH titration curve of three different bases by 0.10M HCl is,

Figure 1

The pH curve for the titration of 50

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