NCERT Class XII Chemistry
Chapter - The d- and f-Block Elements
Questions with Solutions
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Question : 22
Total: 49
What is meant by ‘disproportionation’? Give two examples of disproportionation reaction in aqueous solution.
Solution:
Disproportionation reaction involves the oxidation and reduction of thesame substance. The two examples of disproportionation reaction are
(i)2 C u + → C u 2 + + C u
(i)
(ii) 3 M n O 4 2 – + 4 H + → 2 M n O 4 – + M n O 2 + 2 H 2 O
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