Chapter 18, Problem 2STP

Interpretation Introduction

Interpretation:

The acid-base indicator which is suitable for detecting the end point of the given titration curve is to be identified.

Concept introduction:

Acid-base indicator is a chemical which changes its color on neutralization.

There are various acid-base indicators like phenolphthalein, methyl orange, bromocresol green, bromocresol purple, phenol red

All have a specific $pH$ value on which solution changes its color that is called as equivalence point.

Answer to Problem 2STP

C

Explanation of Solution

Bromocresol green can be used as indicator in the given titration because its equivalence point is in range $3.8-5.4$.

This is represented as follows:

Conclusion

Thus the indicator which changes its color at equivalence point is suitable for that titration.