Chapter 17.3, Problem 6PPA

(a)

Interpretation Introduction

Interpretation:

The suitable indicator for given titrations has to be identified.

Concept introduction:

• Acid-base indicator contains weak acid or base.  It cause to change the colour of solution with change in $\text{pH}$ at end point.
• The point at which amount of standard solution and analyte becomes equal and neutralisation happens in titration is called equivalence point.
• The end point is defined as occurrence of colour change at particular point in titration.

To identify: The suitable indicator for ${\text{CH}}_{\text{3}}{\text{NH}}_{\text{2}}\text{ Vs HBr}$ titration.

(b)

Interpretation Introduction

Interpretation:

The suitable indicator for given titrations has to be identified.

Concept introduction:

• Acid-base indicator contains weak acid or base.  It cause to change the colour of solution with change in $\text{pH}$ at end point.
• The point at which amount of standard solution and analyte becomes equal and neutralisation happens in titration is called equivalence point.
• The end point is defined as occurrence of colour change at particular point in titration.

To identify: The suitable indicator for ${\text{HNO}}_{\text{3}}\text{ Vs NaOH}$ titration.

(c)

Interpretation Introduction

Interpretation:

The suitable indicator for given titrations has to be identified.

Concept introduction:

• Acid-base indicator contains weak acid or base.  It cause to change the colour of solution with change in $\text{pH}$ at end point.
• The point at which amount of standard solution and analyte becomes equal and neutralisation happens in titration is called equivalence point.
• The end point is defined as occurrence of colour change at particular point in titration.

To identify: The suitable indicator for ${\text{HNO}}_2\text{ Vs KOH}$ titration.