What is the product when ethanol is oxidised by (a) acidified K₂Cr₂O₇ and (b) alkaline KMnO₄ — JEE Chemistry
What is the product when ethanol is oxidised by (a) acidified $K_2Cr_2O_7$ and (b) alkaline $KMnO_4$?
1 Answer
VAVidaara Admin
✓ Vidaara Team
✓ Accepted
· 29d ago
▲ 14
(a) Mild/controlled oxidation:
$$CH_3CH_2OH \xrightarrow{[O]} CH_3CHO \xrightarrow{[O]} CH_3COOH$$
With acidic $K_2Cr_2O_7$ (excess): $Acetic acid (CH_3COOH)$
(b) Alkaline $KMnO_4$ (hot):
$$CH_3CH_2OH \xrightarrow{KMnO_4/OH^-} CH_3COOK^- \rightarrow CH_3COOH (on acidification)$$
$$Acetic acid in both cases (vigorous oxidation)$$
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Discussion (4)
C
Saved me before my mock test. Much clearer than my coaching notes.
SP
Why do we take the positive value only in the last step?
J
Underrated solution. The way you set it up makes it almost obvious.
SG
Thanks a ton, I was stuck on this exact problem for an hour.