Question

State law of constant proportion

Answer 1

Solution:

Law of constant proportions:


The law of constant proportions was given by Proust in 1779.

According to the law of constant proportions a chemical compound always consists of the same elements combine together in the same proportion by mass.


This law means that whatever be the source from where it is obtained a pure chemical compound is always made up of the same element in the same mass percentage.


For e.g


Ammonia is a compound.  Ammonia always consists of the same two elements nitrogen and hydrogen combined together in the same ratio 14 : 3 by mass..


The law of constant proportions is also known as the law of Definite proportions of the law of constant compositions.


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Answer 2

Law of proportion states that in a chemical compound the elements are always present in definite proportions by mass.

Ex: 3g of carbon requires 8 g of oxygen to form carbon dioxide.

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