Question

$C_2{H}_2\underset{dil.H_{2}S{O}_4}{\overset{HgS{O}_4}{\to }}P\stackrel{\left[O\right]}{\to }Q\stackrel{SOC{l}_2}{\to }R\underset{Pd-BaS{O}_4}{\overset{H_2}{\to }}S$

The end product in the above sequence of reactions is:

• A. Ethyl ethanol
• B. Ethanal
• C. Propanal
• D. Propanol

Answer 1

The correct option is B Ethanal

$C_2{H}_2\underset{dil.H_{2}S{O}_4}{\overset{HgS{O}_4}{\to }}\underset{\left(P\right)}{C{H}_3-CHO}\stackrel{\left[O\right]}{\to }\underset{\left(Q\right)}{C{H}_{3}COOH}$

$\underset{\left(Q\right)}{C{H}_{3}COOH}\stackrel{SOC{l}_2}{\to }\underset{\left(R\right)}{C{H}_3\stackrel{O}{\stackrel{||}{C}}Cl}\underset{Pd-BaS{O}_4}{\overset{H_2}{\to }}\underset{\left(S\right)}{C{H}_3\stackrel{O}{\stackrel{||}{C}}H}$