question_answer

Urotropine is obtained by the reaction of \[N{{H}_{3}}\]with:

A) \[C{{H}_{3}}OH\]                             

B) \[HCHO\]

C)  \[C{{H}_{3}}CHO\]         

D) \[C{{H}_{3}}COC{{H}_{3}}\]

Correct Answer: B

Solution :

                 Urotropine is obtained by reaction of formaldehyde with ammonia. \[6HCHO+4N{{H}_{3}}\xrightarrow{{}}\underset{Urotropine}{\mathop{{{(C{{H}_{2}})}_{6}}{{N}_{4}}}}\,\]          \[+\underset{\begin{smallmatrix}  (Hexamethylene \\  \,\,\,\,\,\,tetramine) \end{smallmatrix}}{\mathop{6{{H}_{2}}O}}\,\] \[2C{{H}_{3}}-\overset{\begin{smallmatrix}  O \\  || \end{smallmatrix}}{\mathop{C}}\,-H+N{{H}_{3}}\xrightarrow{{}}\]