Question

explain law of multiple proportions with suitable examples

Answer 1

When two elements combine to form two or more compounds, the ratio in which one of the elements combines with a fixed mass of the other is always simple.

"If an element combines with another element to produce two or more than two compounds, the weight of one which combines with the constant weight of the other, bears a simple ratio to one another."

For example Hydrogen and Oxygen combine to form water H2O and hydrogen peroxide H2O2. Two atoms of hydrogen combine with one atom of oxygen in the case of water, while two atoms of hydrogen combine with two atoms of oxygen in the case of hydrogen peroxide. The ratio of oxygen atoms combining with a fixed number of hydrogen atoms in these two compounds is 1:2.

In terms of masses also, every 2.016 g of hydrogen ( g.at. mass of hydrogen is 1.008g) combines with 15.999 g of oxygen to form water and 31.998g of oxygen to form hydrogen peroxide. Hence the ratio is 15.999 : 31.998 or 1:2 which is a simple ratio. plzz mark it as brain list

Answer 2

The law of multiple proportions rays that if two elements can combine to form more than one compound, the masses of one element that combine with a fixed mass of other element are in a ratio of small whole numbers. e.g. hydrogen and oxygen can combine to form water as well as hydrogen peroxide.Here, the masses of oxygen (16g & 32g) which combine with a fixed mass of hydrogen (2g) bear a simple ratio i.e., 16:32 = 1:2.