Question

Write notes on laws of multiple proportion.

Answer 1

Law of multiple proportions $\to$

According to the law of multiple proportions, if two elements can combine to form more than one compound, the masses of one element that combine with a fixed mass of the other element, are in the ratio of small whole numbers.

E.g.-

$\underset{\left(2g\right)}{\text{Hydrogen}}+\underset{\left(16g\right)}{\text{Oxygen}}⟶\underset{\left(18g\right)}{\text{Water}}$

$\underset{\left(2g\right)}{\text{Hydrogen}}+\underset{\left(32g\right)}{\text{Oxygen}}⟶\underset{\left(34g\right)}{\text{Hydrogen peroxide}}$

Here, the masses of oxygen $(i.e.16g\text{and}32g)$ which combine with a fixed mass of hydrogen $\left(2g\right)$ bear a simple ratio, i.e., $16:32$ or $1:2$.