The equivalent weight of phosphoric acid H3PO4in the reaction NaOH +H3PO4 → NaH2 PO4 + H2O is
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a
25
b
49
c
59
d
98
answer is D.
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Detailed Solution
Molecular weight of H3PO4 = 98 In the reaction only one H atom is replaced. Equivalentweight= Molecular weightNumber of ions of H ions replaced = 981 = 98.