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Question

H3PO4 forms NaH2PO4, Na2HPO4 and Na3PO4. Equivalent weight of acid at each stage of salt formation are 98, 49 and 32.66 respectively.
If true enter 1, else enter 0.

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Solution

As we know,
Equivalentweight=MolecularweightValency
equivalent weight
H3PO4=NaH2PO4=1H+ =M=98
H3PO4=Na2HPO4=2H+ =M2=49
H3PO4=Na3HPO4=3H+ =M3=32.66

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