BuyFindarrow_forward

Chemistry

9th Edition
Steven S. Zumdahl
ISBN: 9781133611097

Solutions

Chapter
Section
BuyFindarrow_forward

Chemistry

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

Which of the indicators in Fig. 14-8 could be used for the titrations in Exercises 61 and 63?

Interpretation Introduction

Interpretation: The indicators from Figure 148 that could be used for titrations in Exercise 61 and 63 are to be stated.

Concept introduction: The acid-base indicators show the color change with change in pH of the solution.

To determine: The indicators from Figure 148 that could be used for titrations in Exercise 61 and 63 .

Explanation

Explanation

The indicator that could be used for the titration of HC3H5O3 and NaOH is Phenolphthalein.

An indicator is a weak acid that remains in equilibrium with its conjugate base as,

HIn(aq)+H2O(l)H3O+(aq)+In(aq)

These acid and conjugate base have different colors. When the value of pH is low, at that time the concentration of H3O+ is high and therefore, equilibrium shifts in the left direction and the color of HIn in the solution. On the other hand, when the value of pH is high, then equilibrium shifts towards the right direction and the solution shows the color of In .

In Exercise 61 a weak acid that is Lactic acid HC3H5O3 is titrated with a strong base NaOH . As the NaOH is added to HC3H5O3 , the solution starts becoming basic in nature due to the addition of a strong base. The solution becomes more and more basic with increasing volume of NaOH in HC3H5O3 . Therefore, the indicator used is Phenolphthalein as it lies in the pH range of 8

Still sussing out bartleby?

Check out a sample textbook solution.

See a sample solution

The Solution to Your Study Problems

Bartleby provides explanations to thousands of textbook problems written by our experts, many with advanced degrees!

Get Started

Chapter 15 Solutions

Show all chapter solutions add

Additional Science Solutions

Find more solutions based on key concepts

Show solutions add

Which molecule does not form during glycolysis? a. NADH b. pyruvate c. FADH2 d. ATP

Biology: The Unity and Diversity of Life (MindTap Course List)

Fruit punch sweetened with grape juice concentrate can contain as much sugar as fruit punch sweetened with high...

Nutrition: Concepts and Controversies - Standalone book (MindTap Course List)

Define the terms aromatic and aliphatic.

Chemistry for Today: General, Organic, and Biochemistry

What is the difference between the Moon and a moon?

Foundations of Astronomy (MindTap Course List)

A 0.600-kg particle has a speed of 2.00 m/s at point and kinetic energy of 7.50 J at point . What is (a) its k...

Physics for Scientists and Engineers, Technology Update (No access codes included)