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Stoichiometric Calculations

Equivalent we...

Question

Equivalent weight of $H_{3} {P O}_{4}$ is:

E = \frac{M}{3}

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E = \frac{M}{2}

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E = \frac{M}{4}

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none of these

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Solution

The correct option is A $E = \frac{M}{3}$
$H_{3} {P O}_{4} t r i b a s i c a c i d ⇌ H^{+} + H_{2} P O_{4}^{-}; E = M$ and $H_{3} {P O}_{4} ⇌ H P O_{4}^{2 -} + 2 H^{+}; E = \frac{M}{2}$ and $H_{3} {P O}_{4} ⇌ P O_{4}^{3 -} + 3 H^{+}; E = \frac{M}{3}$

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