Question
Question: One mole of calcium phosphide on reaction with excess water gives :...
One mole of calcium phosphide on reaction with excess water gives :
A
One mole of phosphine
B
Two moles of phosphoric acid
C
Two moles of phosphine
D
One mole of phosphorus pentoxide
Answer
Two moles of phosphine
Explanation
Solution
According to the following reaction, one mole of Ca3P2 gives 2 mole of PH3
Ca3P2 + 6H2O ¾® 3Ca(OH)2 + 2PH3.