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प्रश्न
State the law of constant proportions. Give one example to illustrate this law.
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उत्तर
Law of constant proportions states that a chemical compound always consists of the same elements combined together in the same proportion by mass. It was put forward by Joseph Proust in 1779
It means that a pure chemical compound is always made up of the same elements in the same mass percentage.
Law of constant proportions can be illustrated by the following example:
Carbon dioxide exists in nature in different forms and can be chemically produced in different ways. Yet, all the different samples of carbon dioxide will always contain the same elements i.e. carbon and oxygen in the same proportion by mass i.e. 3:8.
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संबंधित प्रश्न
Which postulate of Dalton’s atomic theory can explain the law of definite proportions?
Which part of the Dalton's atomic theory came from the law of constant proportions given by Proust ?
Name any two laws of chemical combination.
Give one major drawback of Dalton's atomic theory of matter.
In water, the proportion of oxygen and hydrogen by mass is :
What do we call those particles which have more or less electrons than the normal atoms ?
What do we call those particles which have more electrons than the normal atoms ?
Work out the formulae for the following compounds:
Calcium carbonate
The same proportion of carbon and oxygen in the carbon dioxide obtained from different sources proves the law of ______.
State the law of constant proportions.
