A) one mole of phosphine.
B) two moles of phosphoric acid.
C) two moles of phosphine.
D) one mole of phosphorus oxide.
Correct Answer: C
Solution :
[c] \[\underset{1\,mole}{\mathop{C{{a}_{3}}{{P}_{2}}}}\,+6{{H}_{2}}O\to 3Ca{{\left( OH \right)}_{2}}+\underset{2\,moles}{\mathop{2P{{H}_{3}}}}\,\]
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