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Chemistry

9th Edition
Steven S. Zumdahl
ISBN: 9781133611097

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BuyFindarrow_forward

Chemistry

9th Edition
Steven S. Zumdahl
ISBN: 9781133611097
Textbook Problem

A solution has a pH of 4.5. What would be the color of the solution if each of the following indicators were added? (See Fig. 14-8.)

a. methyl orange

b. alizarin

c. bromcresol green

d. phenolphthalein

(a)

Interpretation Introduction

Interpretation:

A solution with pH value equal to 4.5 is given. The color of this solution when each of the given indicators are added is to be stated.

Concept introduction:

A substance that is expected to change its color in response to a change in the chemical properties of a solution is termed as an indicator. The end point in a titration corresponds to a color change of the solution.

Answer

The color of the solution will be yellow.

Explanation

Explanation

Refer Figure 148

The pH range of methyl orange indicator is approximately 3.24.5

(b)

Interpretation Introduction

Interpretation:

A solution with pH value equal to 4.5 is given. The color of this solution when each of the given indicators are added is to be stated.

Concept introduction:

A substance that is expected to change its color in response to a change in the chemical properties of a solution is termed as an indicator. The end point in a titration corresponds to a color change of the solution.

Answer

The color of the solution will be yellow.

(c)

Interpretation Introduction

Interpretation:

A solution with pH value equal to 4.5 is given. The color of this solution when each of the given indicators are added is to be stated.

Concept introduction:

A substance that is expected to change its color in response to a change in the chemical properties of a solution is termed as an indicator. The end point in a titration corresponds to a color change of the solution.

Answer

The color of the solution will be green.

(d)

Interpretation Introduction

Interpretation:

A solution with pH value equal to 4.5 is given. The color of this solution when each of the given indicators are added is to be stated.

Concept introduction:

A substance that is expected to change its color in response to a change in the chemical properties of a solution is termed as an indicator. The end point in a titration corresponds to a color change of the solution.

Answer

The solution will be a clear solution.

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