CH_3-CH_2-OH xrightarrow{PCC} A xrightarrow{H | vedclass

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(A) Step $1$: Oxidation of ethanol $(CH_3-CH_2-OH)$ with $PCC$ (Pyridinium chlorochromate) gives acetaldehyde $(CH_3-CHO)$,which is compound $A$.Step

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$CH_3-CH(OH)COOH$

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(A) Step $1$: Oxidation of ethanol $(CH_3-CH_2-OH)$ with $PCC$ (Pyridinium chlorochromate) gives acetaldehyde $(CH_3-CHO)$,which is compound $A$.Step $2$: Nucleophilic addition of $HCN$ to acetaldehyde $(CH_3-CHO)$ yields acetaldehyde cyanohydrin $(CH_3-CH(OH)CN)$,which is compound $B$.Step $3$: Acidic hydrolysis of the cyanohydrin $(CH_3-CH(OH)CN)$ followed by heating converts the $-CN$ group into a carboxylic acid group $(-COOH)$,resulting in $2$-hydroxypropanoic acid $(CH_3-CH(OH)COOH)$,which is compound $C$.

$CH_3-CH_2-OH$ $\xrightarrow{PCC} A$ $\xrightarrow{HCN} B$ $\xrightarrow[\Delta]{H_3O^{+}} C$
Compound $C$ is:

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$CH_3-CH_2-OH$ $\xrightarrow{PCC} A$ $\xrightarrow{HCN} B$ $\xrightarrow[\Delta]{H_3O^{+}} C$Compound $C$ is: