Interpretation:
The structure of aluminum oxide is to be drawn and the replacement reaction between chromium and aluminum ion is to be shown.
Concept introduction:
The replacement of one of the elements of a compound by another element is called displacement reaction. It will become a
Answer to Problem 80A
Structure of aluminum oxide:
Reaction of aluminum replacement by chromium (III) ion:
The above reaction is not a redox reaction.
Explanation of Solution
In the above structure of aluminum oxide, the oxidation states of aluminum and oxygen are +3 and -2 respectively which cancel each other out and make the compound electrically stable. In the displacement reaction, the oxidation states of ions are unchanged, hence it is not a redox reaction because neither oxidation nor reduction is taking place.
Chapter 19 Solutions
Chemistry: Matter and Change
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