Question

determine the equivalent weight of Na2SO4 assuming the formula weight as X

Answer 1

equivalent mass

= formula weight /charge on cation or charge on anion

equivalent mass =x/2

Answer 2

The equivalent weight of $Na_2SO_4$  assuming the formula weight as X is $\frac{X}{2}g$

Explanation:

Equivalent weight is calculated by dividing the molecular weight by n factor. ${\text{Equivalent weight}}=\frac{\text{Molecular weight}}{n}$

n= charge of cation, for salts

For $Na_2SO_4$ , n =2

$Na_2SO_4\rightarrow 2Na^++SO_4^{2-}$

As $Na_2SO_4$ dissociates to give 2 $Na^+$ and thus it has charge of 2.

As formula mass of $Na_2SO_4$  is X.

${\text{Equivalent weight}}=\frac{X}{2}=\frac{X}{2}g$

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