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QUESTION
Q27) What is normality of 1M solution of H3PO4? [ AIIMS 1983]




SOLUTION

Normality=Molarity × Basicity
Basicity of H3PO3=2
Orthophosphorus (Phosphonic acid) H3PO3 is a dibasic acid. It has two P−OH bonds and one P−H bond.
Answer: (c)