EBK FOUNDATIONS OF COLLEGE CHEMISTRY
EBK FOUNDATIONS OF COLLEGE CHEMISTRY
15th Edition
ISBN: 9781118930144
Author: Willard
Publisher: JOHN WILEY+SONS INC.
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Chapter 17, Problem 38AE

(a)

Interpretation Introduction

Interpretation:

The false part in indicated equation has to be identified.

  Cu++eCu2+

Concept Introduction:

  • In order to balance any redox reaction method used in acidic medium is summarized below.
  • In the first step oxidation number of each element is identified.
  • The overall reaction is divided into oxidation and reduction held cell based upon changes observed in oxidation states.
  • Each side of half-cell equation is balanced except H and O.  The electrons lost are made equal to electron gained so as to add two half-cells and formulate overall reaction equation.
  • In next step O atoms are balanced by addition water molecule.
  • For the acidic medium, excess electrons are neutralized by addition of H+ ions to each side.

Oxidation refers to phenomenon of loss of electrons; loss of electropositive H and gain of electronegative O and substance oxidized is termed as reducing agent.

Reduction is process that involves gain of electrons, gain of H or loss of electronegative O atom and substance reduced is termed as oxidizing agent.

(b)

Interpretation Introduction

Interpretation:

The false part in indicated equation has to be identified.

  Pb2++e2Pb

Concept Introduction:

Refer to part (a).

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Chapter 17 Solutions

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