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Q. The following data are obtained when dinitrogen and dioxygen react together to form different compounds:
Mass of dinitrogen Mass of dioxygen
$14\,g$ $16\,g$
$14\,g$ $32\,g$
$28\,g$ $32\,g$
$28\,g$ $96\,g$

Which law of chemical combination is obeyed by the above experimental data?

Some Basic Concepts of Chemistry

Solution:

According to the law of multiple proportions, "if two elements 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."
Fixing the mass of dinitrogen as $28 \,g$, masses of dioxygen combined will be $32, 64, 32$ and $96$ in the given figures. They are in the ratio of $1 : 2 : 1 : 3$.