pBlock ElementsII 1 Question 33
33. One mole of calcium phosphide on reaction with excess water gives
(1999, 2M)
(a) one mole of phosphine
(b) two moles of phosphoric acid
(c) two moles of phosphine
(d) one mole of phosphorus pentaoxide
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Solution:
- $\mathrm{Ca}{3} \mathrm{P}{2}+6 \mathrm{H}{2} \mathrm{O} \longrightarrow 3 \mathrm{Ca}(\mathrm{OH}){2}+2 \mathrm{PH}_{3}$
