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Chemistry In Focus

7th Edition
Tro + 1 other
Publisher: Cengage Learning,
ISBN: 9781337399692

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BuyFindarrow_forward

Chemistry In Focus

7th Edition
Tro + 1 other
Publisher: Cengage Learning,
ISBN: 9781337399692
Chapter 14, Problem 49E
Textbook Problem
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The following diagram shows a molecular view of the electrochemical cell diagrammed in Figure 14.2. Draw a molecular view showing the changes that occur after the cell has produced electrical current for some extended period of time.

Chapter 14, Problem 49E, The following diagram shows a molecular view of the electrochemical cell diagrammed in Figure 14.2.

Interpretation Introduction

Interpretation:

Using the molecular view, the change that occurs after the cell has produced electrical current for some extended period of time is to be drawn.

Concept Introduction:

Oxidation is the addition of an electronegative element or the removal of an electropositive element in a chemical reaction. Also, loss of electrons is oxidation.

Reduction is the addition of an electropositive element or the removal of an electronegative element in a chemical reaction. Also gain of electrons is reduction.

An electrochemical cell is also known as a galvanic or voltaic cell.

An electrochemical cell is a type of battery that converts chemical energy into electrical energy.

Explanation of Solution

Given information:

The electrochemical cell contains two half-cells. The oxidation half-cell occurs at the anode and the reduction half-cell occurs at the cathode.

In the left cell, the zinc metal dissolves into the zinc nitrate solution. The zinc metal becomes positively-charged from losing the electrons.

Zn half-cell reaction will occur as oxidation at the anode.

Zn(s)Zn2+(aq)+2e

In the right cell, the copper metal dissolves into the copper nitrate solution

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Chemistry In Focus
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