Redox and Equivalent ConceptHard

Question

In a reaction, calcium phosphate is producing calcium hydrogen phosphate. The equivalent weight of calcium phosphate in this process is (Ca = 40, P = 31)

Options

A.310
B.155
C.103.33
D.51.67

Solution

$Ca_{3}\left( PO_{4} \right)_{2} + 2H^{+} \rightarrow 2CaHPO_{4} + Ca^{2 +}$

Equivalent weight of $Ca_{3}\left( PO_{4} \right)_{2} = \frac{M}{2}$

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