pBlock ElementsII 1 Question 65
60. White phosphorus on reaction with $\mathrm{NaOH}$ gives $\mathrm{PH} _{3}$ as one of the products. This is a
(a) dimerisation reaction
(b) disproportionation reaction
(c) condensation reaction
(d) precipitation reaction
Show Answer
Answer:
Correct Answer: 60. (b)
Solution:
- White phosphorus undergo disproportionation in alkaline medium.
$$ \mathrm{P} _{4}+\mathrm{NaOH} \longrightarrow \mathrm{PH} _{3}+\mathrm{NaH} _{2} \mathrm{PO} _{2} $$
