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Question Q121)Assertion: In the reaction 2NaOH + H3 PO4 → Na2 HPO4 + 2H2 O equivalent weight of H3PO4 is M/2, where M is its molecular weight. Reason: Equivalent weight =Molecular weight/ n -factor Solution



SOLUTION

As two Hydrogen of H3PO4 is placed by Na. Thus equivalent weight of H3PO4 is M/2 And reason is standard formula

Answer : (a)