An unknown compound was found to be soluble in concentrated sulfuric acid; however, the 2,4-DNP, chromic acid, and potassium per

Question

3 years ago

8

An unknown compound was found to be soluble in concentrated sulfuric acid; however, the 2,4-DNP, chromic acid, and potassium per

manganate gave negative results. The only positive result detected was the ferrous hydroxide test. What is the most likely functional group present in such compound

Chemistry

1 answer:

Alecsey [184] · Answer 1 · 2022-04-19T12:51:01+03:00

Explanation:

2,4-DNP is negative: aldehyde and ketone absent

Chromic acid is negative: alcohol absent.

KMnO4 test negative: alkene absent

The only positive result is for Fe(OH)2.

Nitro group-containing compounds react with ferrous hydroxide to give amine and ferric hydroxide red ppt. Hence given compound contains the nitro group (-NO2).