TS EAMCET · Chemistry · p Block Elements (Group 15, 16, 17 & 18)
Phosphine is prepared by the reaction of \(\mathrm{P}_4\) with which of the following?
- A \(\mathrm{H}_2 \mathrm{SO}_4\)
- B \(\mathrm{NaOH}\)
- C \(\mathrm{H}_2 \mathrm{~S}\)
- D \(\mathrm{HNO}_3\)
Answer & Solution
Correct Answer
(B) \(\mathrm{NaOH}\)
Step-by-step Solution
Detailed explanation
When white phosphorus \(\left(\mathrm{P}_4\right)\) is boiled with conc. NaOH solution, we get phosphine \(\left(\mathrm{PH}_3\right)\) gas in laboratory. \(\mathrm{P}_4+3 \mathrm{NaOH}+3 \mathrm{H}_2 \mathrm{O} \longrightarrow \mathrm{PH}_3+3 \mathrm{NaH}_2 \mathrm{PO}_2\)
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