Carboxylic Acids and their Derivatives - Result Question 59

45. In the following reactions, identify the compounds $A, B, C$ and $D$.

(i) $PCl _5+SO _2 \longrightarrow A+B$

(ii) $A+CH _3 COOH \longrightarrow C+SO _2+HCl$

(iii) $2 C+\left(CH _3\right) _2 Cd \longrightarrow 2 D+CdCl _2$

(1994,1 M $\times$ 4=4 M)

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Solution:

(i) $PCl _5+SO _2 \longrightarrow \underset{B}{POCl _3}+\underset{A}{SOCl _2}$

(ii) $SOCl _2+CH _3 COOH \longrightarrow \underset{(A)}{CH_3 COCl}+SO _2+HCl$

(iii)

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