State and explain the law of multiple proportions.

General Awareness General QA 2 years ago

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The law of multiple proportion states that when two elements combine to form two or, more than two compounds, the weights of one of the elements which combine with a fixed weight of the other, bear a simple whole number ratio.

The law may be illustrated by the following example : Nitrogen and oxygen combine to form five oxides namely nitrous oxide (N2O), nitric oxide (NO), nitrogen trioxide (N2O3), nitrogen tetroxide (N2O4) and nitrogen pentoxide (N2O5).

OxideNumber of
parts by
weight of
nitrogen
Number of
parts by
weight of
oxygen
Fixed 
weight of
nitrogen
(14 parts)
Number of parts
by weight of
oxygen combining
with 14 parts
by weight of
nitrogen
NO22816148
NO14161416
N2O328481424
N2O428641432
N2O528801440

The ratio between the different weights of oxygen in different compounds which combine with the same weight of nitrogen (14 parts) is

8 : 16 : 24 : 32 : 40

or, 1 : 2 : 3 : 4 : 5

This is simple whole number and hence, supports the law.

Posted on 06 Oct 2022, this text provides information on General Awareness related to General QA. Please note that while accuracy is prioritized, the data presented might not be entirely correct or up-to-date. This information is offered for general knowledge and informational purposes only, and should not be considered as a substitute for professional advice.

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