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:

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

(ii) $SOCl _2+CH _3 COOH \longrightarrow CH _3 COCl+SO _2+HCl$

$(A)$

(iii)



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