Question

If the equivalent weight of a metal oxide is $20$, then equivalent weight of its nitride will be:

• A. $24$
• B. $16.67$
• C. $26.66$
• D. $19$

Answer 1

The correct option is B $16.67$

Equivalent weight of metal oxide $=20$

Now,

Equivalent weight of metal $+$ Equivalent weight of oxide $=$ Equivalent weight of metal oxide

Here, Equivalent weight of oxygen $=8$

And, Equivalent weight of nitrogen $=\frac{14}{3}=4.67$

Using these values,

Equivalent weight of metal $+8=20$

$⟹$ Equivalent weight of metal $=12$

$\therefore$ Equivalent weight of Nitride $=$ Equivalent weight of metal $+$ Equivalent weight of Nitrogen

$⟹$ Equivalent weight of Nitride $=12+4.67=16.67$