Question
Question: An organic compound having molecular mass 60 is found to to contain C = 20%, H = 6.67% and N = 46.67...
An organic compound having molecular mass 60 is found to to contain C = 20%, H = 6.67% and N = 46.67% while rest is oxygen. On heating it gives NH3 along with a solid residue. The solid residue give violet colour with alkaline copper sulphate solution. The compound is :
A
CH3CH2CONH2
B
(NH2)2CO
C
CH3CONH2
D
CH3NCO
Answer
(NH2)2CO
Explanation
Solution
The empirical formula from given percentage data is N2H4CO. Urea on heating gives biurate & ammonia. Biurate gives violet colour with CuSO4 solution.