Question

0.64 g of a metal hydride contains 0.24 g of hydrogen. The equivalent mass of the metal will be:

• A. 1.66 g
• B. 13.33 g
• C. 1.366 g
• D. 2.666 g

Answer 1

The correct option is A 1.66 g

Mass of the metal hydride = 0.64 g
Mass of hydrogen = 0.24 g
$\therefore$Mass of the metal = 0.64 - 0.24
= 0.40 g
We know that,
$\frac{\text{mass of the metal}}{\text{mass of hydrogen}}=\frac{\text{equivalent mass of the metal}}{\text{equivalent mass of hydrogen}}$

$\frac{0.40}{0.24}=\frac{\text{equivalent mass of the metal}}{1}$

Hence, the equivalent mass of the metal is 1.66 g