Question

explain the law of Definite proportion

Answer 1

In chemistry, the law of definite proportion, sometimes called Proust'slaw or the law of definite composition, or law of constant composition states that a given chemical compound always contains its component elements in fixed ratio (by mass) and does not depend on its source and method of preparation

Answer 2

Law of Definite proportion:

The samples of a compound will always contain the same proportion of elements by mass, according to the law of definite proportions.

Law explanation:

• Chemical compounds are made up of components that are present in a fixed ratio by mass, according to the law of constant proportions.
• This means that regardless matter the source, any pure sample of a compound will always have the same elements that are present in the same ratio by mass.
• Chemistry students studying stoichiometry are guided by this law.

For instance:

• The ratio of nitrogen to oxygen atoms in a molecule of nitrogen dioxide (NO2) is always 1:2.
• The proportion of nitrogen to oxygen molecules never changes.

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