Question

$SOc{l}_2$ (Sulphuryl Chloride) reacts with water to give a mixture of $H_{2}S{O}_4$ and HCI. What volume of 0.2 M $Ba(OH{)}_2$ is needed to completely neutralise 25ml of 0.2M $S{O}_{2}C{l}_2$ solution:

• A. 25 ml
• B. 50 ml
• C. 100 ml
• D. 200 ml

Answer 1

The correct option is B 50 ml

$SOc{l}_2+2H_{2}O\to H_{2}S{O}_4+2HCI\frac{25}{1000}\times 0.2=\underset{–}{5\times {10}^{-3}moles}\to \underset{–}{5\times {10}^{-3}moles+10\times {10}^{-3}moles}$
Mill moles Ba $O{H}_2)$ required $=5+10/2=10$
$M\times V=10$
$0.2\times V=10$
$V=\frac{10}{0.2}=50ml$