Question

What is the equivalent weight of a chloride of a metal if the equivalent weight of its oxide is 28 g?

• A. 55.5 g
• B. 20.5 g
• C. 35.5 g
• D. 50.5 g

Answer 1

The correct option is A 55.5 g

Given, equivalent weight of the metal oxide = 28 g
Since n-factor $\left(n_f\right)$ of oxygen atom is 2, the equivalent weight of $O$ atom = $\frac{\text{molar mass}}{n_f}=\frac{16}{2}=8$
$\therefore$ equivalent weight of the metal,
= 28 - 8 = 20 g
Also, equivalent weight of $Cl$ atom
= $\frac{\text{molar mass}}{n_f}=\frac{35.5}{1}=35.5$
$\therefore$ The equivalent weight of metal chloride = 20 + 35.5 = 55.5 g