QUESTION
Q75) The percentage of P2O5 in diammonium hydrogen phosphate, (NH4)2HPO4 is .... [ CPMT 1992]




SOLUTION

2(NH4)2HPO4) → P2O5
2(36+1+31+64) → 62.80
264 → 142
∴ % of P2O5=(142/264)×100=53.78Answer: (c)