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Question

The Equivalent weight of H3PO4 in the reaction is :
Ca(OH)2+H3PO4CaHPO4+2H2O (Ca=40,P=31,O=16)

A
49
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B
98
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C
32.66
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D
147
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Solution

The correct option is A 49
Ca(OH)2+H3PO4CaHPO4+2H2O

Since two H-atoms are replaced in the reaction.
Ew=Mwn=982=49

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