AP EAMCET · Chemistry · p Block Elements (Group 15, 16, 17 & 18)
Which of the following reactions give phosphine?
(i) Reaction of calcium phosphide with water
(ii) Heating white phosphorous with concentrated NaOH solution in inert atmosphere
(iii) Heating red phosphorous with alkali
- A (i), (ii) only
- B (i), (ii), (iii)
- C (ii), (iii) only
- D (i), (iii) only
Answer & Solution
Correct Answer
(A) (i), (ii) only
Step-by-step Solution
Detailed explanation
(i), (ii) (i) The reaction of calcium phosphide with water \(\mathrm{Ca}_3 \mathrm{P}_2+3 \mathrm{H}_2 \mathrm{O} \longrightarrow \underset{\text { Phosphine }}{2 \mathrm{PH}_3+3 \mathrm{CaO}}\) (ii) Heating white phosphorous with concentrated NaOH solution…
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