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Introductory Chemistry: A Foundati...

9th Edition
Steven S. Zumdahl + 1 other
ISBN: 9781337399425

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BuyFindarrow_forward

Introductory Chemistry: A Foundati...

9th Edition
Steven S. Zumdahl + 1 other
ISBN: 9781337399425
Textbook Problem
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. Consider a galvanic cell based on the following oxidation— reduction reaction:

2Al 3 + ( aq ) + 3Mg ( s ) 2Al ( s ) + 3Mg 2+ ( aq )    What will the electrode found in the cathode portion of the cell be made of? Explain your answer.

a. air

b. HCl

c. Mg

d. Al

e. H2SO4

Interpretation Introduction

Interpretation:

Considering the given oxidation- reduction reaction, what will the electrode found in the cathode portion of the cell made of should be chosen from the multiple answers and should be explained.

Concept Introduction:

Galvanic cells have two electrodes; Anode where the oxidation takes place and the cathode where the reduction takes place. These electrodes can be made of any conductive material like metals, semiconductors, graphite etc. usually we use the solid metal of the corresponding electrolyte solution.

Explanation

Reason for correct option: According to the chemical equation given, Al3 + has reduced into Al and Mg has oxidized into Mg2+. Cathode is where the reduction takes place. Therefore the cathode portion of the cell should be made of Al...

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