Interpretation: The chemical equation,
Concept introduction: The
- First, the given redox reaction is divided into half reactions one oxidation and the other reduction.
- Based on mass and charge the half-reactions are balanced.
- The electrons on both sides of the reaction are equalized.
- Then, add the half-reactions together and the common one is eliminated to get the balanced equation.
- The addition of water molecules and H+ will also help in the balancing of equations.
Answer to Problem 60A
The balanced equation is,
Explanation of Solution
The reaction,
Oxidation:
Reduction:
The electron count is the same so this equation but the oxygen count is not the same it can be balanced by the addition of water.
The addition of water and H+ will make the reaction as,
Reduction:
Oxidation:
Now the charge can be balanced by adding electrons. So, the equation becomes,
Reduction:
Oxidation:
The electron count can be made equal by multiplying the oxidation equation by 2.
Reduction:
Oxidation:
The addition of two reactions will give the balanced equation as,
Chapter 20 Solutions
Chemistry 2012 Student Edition (hard Cover) Grade 11
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