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Q.
Which reagent can convert acetic acid into ethanol?
AMUAMU 2004
Solution:
Lithium aluminium hydride $\left( LiAlH _{4}\right)$ is a powerful reducing agent. It reduces acetic acid into ethanol.
$\underset{\text { acetic acid }}{ CH _{3} COOH } \xrightarrow [\text{ether}]{LiAlH_4} \underset{\text { ethyl alcohol }}{ CH _{3} CH _{2} OH }+ H _{2} O$
$Na + C _{2} H _{5} OH$ is used in the reduction of alkyl halides to alkanes.
$R-X+2 H \xrightarrow{ Na + C _{2} H _{5} OH }R H + HX$
$H _{2}+Pt$ is used in the catalytic hydrogenation.
$CH _{2}= CH _{2}+ H _{2} \xrightarrow{ pt }CH _{3}- CH _{3}$
$> C = O \xrightarrow{ H _{2}+ Pt } > CHOH$
$Sn + HCl$ is used in the reduction of nitroalkanes into primary amine.
$CH _{3} CH _{2} NO _{2}+6[ H ] \xrightarrow{ Sn + HCl }CH _{3} CH _{2} \cdot NH _{2} +2 H _{2} O$