World of Chemistry
World of Chemistry
7th Edition
ISBN: 9780618562763
Author: Steven S. Zumdahl
Publisher: Houghton Mifflin College Div
bartleby

Videos

Question
Book Icon
Chapter 18.3, Problem 4RQ
Interpretation Introduction

Interpretation: The reason for the alkaline battery to last longer than an acid dry cell needs to be described.

Concept introduction: Electrochemistry is the study of the interchange of electrical and chemical energy. In this process, an electric current is produced from an oxidation-reduction reaction and chemical changes are produced by using electric current.

Expert Solution & Answer
Check Mark

Answer to Problem 4RQ

Zinc corrodes less rapidly under basic conditions than under acidic conditions.

Explanation of Solution

Both the alkaline battery and acid dry cell contain zinc as an anode. Under the basic condition, Zn corrodes less readily than an acidic condition. Thus, an alkaline dry cell battery lasts longer than an acid dry cell.

The oxidation reaction of Zn at the anode is as follows:

  Zn+2OHZnO+H2O+2e

The reduction reaction of Mn at the cathode is as follows:

  2MnO2+H2O+2eMn2O3+2OH

The overall reaction that happens in cell reaction is as follows:

  Zn+2MnO2ZnO+Mn2O3

Conclusion

Dry cell batteries do not contain a liquid electrolyte. Electronic watches, calculators, personal music players all are powered by small, efficient dry cell batteries.

Chapter 18 Solutions

World of 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
Introduction to Electrochemistry; Author: Tyler DeWitt;https://www.youtube.com/watch?v=teTkvUtW4SA;License: Standard YouTube License, CC-BY