Question
Chemistry Question on Hydrogen Bonding
An organic compound contains C = 40%, H = 6.67%, N = 46.67% and rest is oxygen. On heating, it gives NH3 along with solid residue and solid residue gives violet colour with alkaline copper sulphate solution. If molecular mass of this organic compound is 60 g, then the compound is:
A
(A) CH3NCO
B
(B) CH4CH2CONH2
C
(C) NH2CONH2
D
(D) CH3CONH2
Answer
(C) NH2CONH2
Explanation
Solution
Explanation:
According to the question:Organic compound ≜ Solid residue +NH3TSolid residue +CuSO4⟶OH− Violet colourThus, the given compound is urea, having molecular formula NH2CONH2