Question

$P_4+3O{H}^{-}+3H_{2}O\to 3H_{2}P{O}_2^{-}+P{H}_3$. Equivalent weight of $P_4$ is:

• A. $\frac{M}{4}$
• B. $\frac{M}{12}$
• C. $\frac{M}{4}+\frac{M}{12}$
• D. $\frac{2M}{12}$

Answer 1

The correct option is C $\frac{M}{4}+\frac{M}{12}$

REF.Image.

Oxidation state charges from zero to +1 and -3

n - factor = 3

equivalent weight = $\frac{M}{3}$