Glycerol xrightarrow{KHSO_4} A xrightarrow{Li | vedclass

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(A) When glycerol is heated with dehydrating agents like $KHSO_4$,it undergoes dehydration to form acrolein $(A)$.$CH_2(OH)-CH(OH)-CH_2(OH) \xrightarr

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Acrolein,allyl alcohol

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(A) When glycerol is heated with dehydrating agents like $KHSO_4$,it undergoes dehydration to form acrolein $(A)$.$CH_2(OH)-CH(OH)-CH_2(OH) \xrightarrow{KHSO_4, \Delta} CH_2=CH-CHO + 2H_2O$Acrolein $(A)$ is $CH_2=CH-CHO$.$LiAlH_4$ is a reducing agent that reduces the aldehyde group to a primary alcohol without affecting the double bond.$CH_2=CH-CHO \xrightarrow{LiAlH_4} CH_2=CH-CH_2OH$Thus,$B$ is allyl alcohol $(CH_2=CH-CH_2OH)$.

Glycerol $\xrightarrow{KHSO_4} A$ $\xrightarrow{LiAlH_4} B$
$A$ and $B$ are :

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Glycerol $\xrightarrow{KHSO_4} A$ $\xrightarrow{LiAlH_4} B$$A$ and $B$ are :