Some Basic Concepts Of Chemistry Question 218

Question: The percentage of P2O5 in diammonium hydrogen phosphate (NH4)2HPO4 is [CPMT 1992]

Options:

A) 23.48

B) 46.96

C) 53.78

D) 71.00

Show Answer

Answer:

Correct Answer: C

Solution:

2(NH4)2HPO42(36+1+31+64)=264,P2O562+80=142,

% of P2O5=wt. of P2O5wt of salt×100

=142264×100=53.78 .



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