Living by Chemistry
Living by Chemistry
2nd Edition
ISBN: 9781464142314
Author: Angelica M. Stacy
Publisher: W. H. Freeman
bartleby

Concept explainers

bartleby

Videos

Question
Book Icon
Chapter U6.123, Problem 7E
Interpretation Introduction

Interpretation: pH at which thymolphthalein changes color needs to be explained.

Concept Introduction: The color change for an indicator occurs when the H+ ion concentration is equal to K. This happens when the concentration of HIn molecules is equal to the concentration of the In ions.

Expert Solution & Answer
Check Mark

Answer to Problem 7E

Thymolphthalein changes color at pH 10.

Explanation of Solution

Color changes for an indicator is occurs if H+ ion concentration is equal to constant K. Given,

  Ka=1010

Since, pH is the negative logarithm of H+ ion concentration. Therefore, substitute the above values.

  pH=10log10=10

  pH=10log10=10

Therefore, pH is 10.

Conclusion

Thymolphthalein changes color at pH 10.

Chapter U6 Solutions

Living by Chemistry

Knowledge Booster
Background pattern image
Chemistry
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.
Recommended textbooks for you
Text book image
Chemistry
Chemistry
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Cengage Learning
Text book image
Chemistry
Chemistry
ISBN:9781259911156
Author:Raymond Chang Dr., Jason Overby Professor
Publisher:McGraw-Hill Education
Text book image
Principles of Instrumental Analysis
Chemistry
ISBN:9781305577213
Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:Cengage Learning
Text book image
Organic Chemistry
Chemistry
ISBN:9780078021558
Author:Janice Gorzynski Smith Dr.
Publisher:McGraw-Hill Education
Text book image
Chemistry: Principles and Reactions
Chemistry
ISBN:9781305079373
Author:William L. Masterton, Cecile N. Hurley
Publisher:Cengage Learning
Text book image
Elementary Principles of Chemical Processes, Bind...
Chemistry
ISBN:9781118431221
Author:Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:WILEY
General Chemistry | Acids & Bases; Author: Ninja Nerd;https://www.youtube.com/watch?v=AOr_5tbgfQ0;License: Standard YouTube License, CC-BY