Question

What is the equivalent weight of a hydride if the equivalent weight of its oxide is $20\text{g}$?

• A. $12\text{g}$
• B. $30\text{g}$
• C. $16\text{g}$
• D. $13\text{g}$

Answer 1

The correct option is D $13\text{g}$

Equivalent weight of the metal oxide $=20\text{g}$
Equivalent weight of the metal = equivalent weight of the metal oxide - equivalent weight of oxygen
Equivalent weight of the metal $=20–8=12\text{g}$
Equivalent weight of the hydride = equivalent weight of the metal + equivalent weight of hydrogen
Equivalent weight of the hydride $=12+1=13\text{g}$