Ca(OH)2 + H3PO4 = CaHPO4 + 2H2O From This Chemical Equitation Calculate The Equivalent Weight Of H3PO4 ?? Answer The Question With Explanation !

1 Answer
Jul 15, 2018

The equivalent weight is =49

Explanation:

The reaction is

Ca(OH)_2 + H_3PO_4rarrCaHPO_4+2H_2O

In this reaction

H_3PO_4rarrHPO_4^(2-)+2H^+

Orthophosphoric acid leaves 2 hydrogen ions.

Hence, its valency factor is =2

"Equivalent weight " = "Molecular Weight "/2

Molecular weight =1*3+31+4*16=98

Therefore,

The equivalent weight is =98/2=49