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Q. The equivalent mass of H3PO4 (Molecular weight = 98 g/mol) and Na2HPO4 (Molecular weight = 142 g/mol) in the reaction are respectively :- H3PO4 + 2NaOH → Na2HPO4 + 2H2O(1) 49, 142 (2) 49, 71(3) 98, 71(4) 98, 142

Answer» Q. The equivalent mass of H3PO4 (Molecular weight = 98 g/mol) and Na2HPO4 (Molecular weight = 142 g/mol) in the reaction are respectively :-

H3PO4 + 2NaOH → Na2HPO4 + 2H2O

(1) 49, 142
(2) 49, 71
(3) 98, 71
(4) 98, 142


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