Question

Phosphorous reacts with chlorine gas to give a colourless liquid, which fumes in moist air to produce HCl and.

• A. $POC{l}_3$
• B. $H_{3}P{O}_3$
• C. $P{H}_3$
• D. $H_{3}P{O}_4$

Answer 1

The correct option is B $H_{3}P{O}_3$

$P_4+6C{l}_2\to 4PC{l}_3$

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

Phosphorous reacts with chlorine gas to give a colourless liquid $\left(PC{l}_3\right)$, which fumes in moist air to produce $HCl$ and $H_{3}P{O}_3$ as represented in the above reaction.

Option B is correct