Compound 'A' (molecular formula C₃H₈O) is treated with acidified potassium dichromate to form a product 'B' (molecular formula C₃H₆O). 'B' forms a shining silver mirror o

Question

Compound 'A' (molecular formula C₃H₈O) is treated with acidified potassium dichromate to form a product 'B' (molecular formula C₃H₆O).

'B' forms a shining silver mirror on warming with ammoniacal silver nitrate.

'B' when treated with an aqueous solution of H₂NCONHNH₂·HCl and sodium acetate gives a product 'C'. Identify the structure of 'C'.

TestHub · Accepted Answer

Solution:

Compound 'A' (C₃H₈O) is a primary alcohol, propan-1-ol. Oxidation with acidified potassium dichromate yields 'B' (C₃H₆O), which is propanal. Propanal gives a silver mirror with Tollens' reagent, confirming it's an aldehyde. Treating propanal with semicarbazide hydrochloride and sodium acetate forms 'C', propanal semicarbazone.

The structure of 'C' is:

$C H_{3} C H_{2} C H = N - N H - CO - N H_{2}$

Chemistry - Carbonyl compounds Question with Solution | TestHub

Options:

Doubts & Discussion

JEE Main 2028 (Class 11)