Solveeit Logo

Question

Chemistry Question on Aldehydes, Ketones and Carboxylic Acids

If formaldehyde and KOH are heated then we get

A

Acetylene

B

Methane

C

Methyl alcohol

D

Ethyl formate

Answer

Methyl alcohol

Explanation

Solution

When α\alpha-hydrogen is absent in carbonyl group, those compound gives cannizaro reaction. This reaction show disproportionation. The oxidation product is salt of carboxylic acid and reduced product is alcohol. HCHO+HCHOKOH(conc.)CH3OHMethylalcohol+HCOOK+HCHO+HCHO\xrightarrow{KOH(conc.)}\, \, \, \, CH_3OH _{}^{Methyl\, alcohol} + HCOO^- K^ +