Question
Which of these will not react with acetylene ?
A.
$$NaOH$$
B.
ammonical $$AgN{O_3}$$
C.
$$Na$$
D.
$$HCl$$
Answer :
$$NaOH$$
Solution :
Acetylene reacts with the other three as :
\[CH\equiv CH\xrightarrow{\left[ AgN{{O}_{3}}+N{{H}_{4}}OH \right]}\underset{\text{white ppt}\text{.}}{\mathop{AgC\equiv CAg}}\,+N{{H}_{4}}N{{O}_{3}}\]
Acetylene reacts with the other three as :
\[CH\equiv CH\xrightarrow{\left[ AgN{{O}_{3}}+N{{H}_{4}}OH \right]}\underset{\text{white ppt}\text{.}}{\mathop{AgC\equiv CAg}}\,+N{{H}_{4}}N{{O}_{3}}\]