S Block Elements Question 157

Question: Phosphine is obtained from the following ore

[Roorkee 1995]

Options:

A) Calcium superphosphite

B) Calcium phosphide

C) Potassium phosphide

D) Calcium hypophosphide

Show Answer

Answer:

Correct Answer: B

Solution:

$ Ca_3P_2+6H_2O\to 3Ca{{(OH)}_2}+2PH_3 $

$ K_3P+3H_2O\to 3KOH+PH_3 $

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