Question

Law of multiple proportions is illustrated by which one of the following pairs ?

• A. $H_{2}S$ and $S{O}_2$
• B. $N{H}_3$ and $N{O}_2$
• C. $N_{2}O$ and $NO$
• D. $N_{2}S$ and $N{a}_{2}O$

Answer 1

Answer: (C)

$N_{2}O$ and $NO$

Law of multiple proportions states that if 2 elements form more than one compounds between them, then the ratios of the masses of the second element which combine with a fixed mass of the first element will be ratios of small whole numbers.

In $N_{2}O$ and $NO$, the ratio of weight of $N$ reacting with a constant weight of $O$ is $2:1.$