
Complete and balance the following
(a)

Interpretation:
The given redox chemical equation, which takes place in basic medium, is to be completed and balanced.
Explanation of Solution
The skeleton chemical equation is shown as follows,
The oxidation states are assigned in the above skeleton chemical equation which are shown as follow,
Two electrons are added on the right of the half-reaction.
Two electrons are added on the left side of the reduction-half reaction of the one given.
Further, equation (3) and equation (4) are added.
To balance the hydrogen atom
The chemical equation (6) represents the balanced chemical equation for the given reaction.
(b)

Interpretation:
The given redox chemical equation, which takes place in basic medium, is to be completed and balanced.
Explanation of Solution
The skeleton chemical equation is shown as follows,
The oxidation states are assigned in the above skeleton chemical equation which are shown as follow,
Three electrons are added on the right side in the oxidation half-reaction.
Five electrons are added on the left side of the reduction-half reaction of the one given.
To balance the electrons on both sides of the overall reaction, equation (9) is multiplied with
To balance the electrons on both sides of the overall reaction, equation (10) is multiplied with
Further, equation (11) and equation (12) are added.
To balance ionic charge on both sides of the chemical reaction,
To balance the hydrogen atom
The chemical equation (15) represents the balanced chemical equation for the given reaction.
(c)

Interpretation:
The given redox chemical equation, which takes place in basic medium, is to be completed and balanced.
Explanation of Solution
The skeleton chemical equation is shown as follows,
The oxidation states are assigned in the above skeleton chemical equation which are shown as follow,
Two electrons are added on the left side of the reduction half-reaction.
Two electrons are added on the right side of the oxidation-half reaction of the one given.
Further, equation (18) and equation (19) are added.
To balance ionic charge on both sides of the chemical reaction,
To balance the hydrogen atom
The chemical equation (22) represents the balanced chemical equation for the given reaction.
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Chapter 14 Solutions
EBK INTRODUCTION TO CHEMISTRY
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