First slide

Water and Heavy water

Question

One mole of calcium phosphide on reaction with excess water gives

Moderate

A

One mole of phosphene
B

Two moles of phosphoric acid
C

Two moles of phosphene
D

One mole of phosphorus pentoxide

Solution

$\underset{(Cal . phosphide 1 mole)}{{Ca}_{3} P_{2}} + 6 H_{2} O \to \underset{phosphene (2 moles)}{2 {PH}_{3}} + 3 Ca {(OH)}_{2}$

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