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H3PO4 + 2NaOH = Na2HPO4 + 2H2O

As per the above mentioned equation what is the equivalent weight of H3PO4 ?

(1) 90/4

(2) 98/2

(3) 85/4

(4) 98/3

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Correct Answer is: (2) 98/2

In the mentioned reaction out of 3 replacable H atoms present in H3PO4, 2H atoms are replaced by Na.

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