Concept explainers
(a)
Interpretation:
The given
(a)
Explanation of Solution
The half-cell reactions for the given chemical equations can be obtained by writing the oxidation numbers of each species present in the given reaction.
As the compound,
On the other hand, the oxidation number of oxygen atom changes from
On the basis of this, the oxidation (anode) and reduction half-cell reactions (cathode) can be written as,
Now, balance the reaction occurring at anode by using the stepwise approach as,
Now, balance the reaction occurring at cathode by using the stepwise approach as,
Multiply the reaction occurring at anode with
The overall reaction can be obtained by balancing the hydroxide ions in the final equation as,
(b)
Interpretation:
The given redox reaction is to be balanced and also, the oxidizing agent, reducing agent, the elements being oxidized and reduced are to be identified.
(b)
Explanation of Solution
The half-cell reactions for the given chemical equations can be obtained by writing the oxidation numbers of each species present in the given reaction.
As the compound
On the basis of this, the oxidation (anode) and reduction half-cell reactions (cathode) can be written as,
Now, balance the reaction occurring at anode by using the stepwise approach as,
Now, balance the reaction occurring at cathode by using the stepwise approach as,
Multiply the reaction occurring at cathode with
The overall reaction can be obtained by balancing the hydroxide ions and water molecules in the final equation as,
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Chapter 14 Solutions
INTRODUCTION TO CHEMISTRY-ACCESS
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