Concept explainers
Balance the following redox equations by the half-reaction method:
Interpretation:
The given redox equations are to be balanced by half-reaction method.
Concept introduction:
An oxidation reaction takes place when there is again of electrons and a reduction reaction occurs when removal of electrons takes place.
A chemical reaction in which electrons transfer from one species to another, such type of oxidation–reduction reaction is known as a redox reaction.
Steps for balancing equation by half-reaction method:
In step
Step
Step
Step
Step
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Step
Answer to Problem 1QP
Solution:
a)
b)
c)
d)
e)
Explanation of Solution
a)
In step
Step
Step
Step
Step
The total charge on the left is
Step
Step
Therefore, the balanced chemical equation is
b)
In step
Step
Step
Step
Step
The total charge on the left is
Step
Step
Therefore, the balanced chemical equation is
c)
In step
Step
Step
Step
Step
The total charge on the left is
Step
Step
Step
Step
Therefore, the balanced chemical equation is
d)
The reaction is balanced by following the steps mentioned in subparts a, b, and c which include separation of half-cell reactions and balancing them. By balancing oxygen by addition of water and then adding electrons and cancelling the identical terms as in the previous subparts, the balanced equation for this reaction will be as:
e)
The reaction is balanced by following the steps mentioned in subparts a, b, and c which include separation of half-cell reactions and balancing them. By balancing oxygen by addition of water and then adding electrons and cancelling the identical terms as in the previous subparts, the balanced equation for this reaction will be as
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