(a)
Interpretation: The chemical equation that is formed by the heating of tungsten oxide with hydrogen,
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.
(a)
Answer to Problem 55A
The balanced equation is,
Explanation of Solution
The given equation is a redox reaction,
The half-reactions involved in the reaction are,
Oxidation:
Reduction:
The electron count can be balanced by multiplying the oxidation equation by 6 and the reduction equation by 2. Therefore the equation becomes,
The equation can again be simplified to,
(b)
Interpretation: The reducing agent in the reaction, c is to be determined.
Concept Introduction: The reagents that undergo oxidation is identified as reducing agent and the reagent that undergo reduction is identified as oxidizing agent.
(b)
Answer to Problem 55A
The reducing agent is
Explanation of Solution
In the reaction,
The half-reactions are,
Oxidation:
Reduction:
So, the reducing agent is
(c)
Interpretation: The element that is undergoing an increase in oxidation in the given reaction,
Concept Introduction: The oxidation number of chemical species is found to increase only when it undergoes an oxidation process.
(c)
Answer to Problem 55A
The oxidation number is increasing for
Explanation of Solution
In the reaction,
The half-reactions are,
Oxidation:
Reduction:
Since oxidation is happening to
So, the oxidation number is increasing in
Chapter 20 Solutions
Chemistry 2012 Student Edition (hard Cover) Grade 11
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