Question

$A+H_{2}O\to B+HCl$

$B+H_{2}O\to C+HCl$

Compound (A), (B) and (C) will be respectively:

• A. $PC{l}_5$ , $POC{l}_3$ , $H_{3}P{O}_3$
• B. $PC{l}_5$ , $POC{l}_3$ , $H_{3}P{O}_4$
• C. $SOC{l}_2$ , $POC{l}_3$ , $H_{3}P{O}_3$
• D. $PC{l}_3$ , $POC{l}_3$ , $H_{3}P{O}_4$

Answer 1

The correct option is B $PC{l}_5$ , $POC{l}_3$ , $H_{3}P{O}_4$

Reaction is:

$PC{l}_5+H_{2}O\to POC{l}_3+2HCl$

$POC{l}_3+3H_{2}O\to H_{3}P{O}_4+3HCl$

Thus, A is $PC{l}_5$, B is $POC{l}_3$ and C is $H_{3}P{O}_4$

Hence, the correct option is $\text{B}$