Question

When an organic compound is oxidised with alkaline KMnO4, S in the organic compound is
converted to
A) S2–
B) S2O52–
C) S2O82–
D) SO32–
E) SO42–

Answer 1

Explanation:

Exhaustive oxidation of organic molecules by KMnO4 will proceed until the formation of carboxylic acids. Therefore, alcohols will be oxidized to carbonyls (aldehydes and ketones), and aldehydes (and some ketones, as in (3) above) will be oxidized to carboxylic acids.

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