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Grade 12th pass9 grade science

State the law of constant proportions . Give one example to illustrate this law.

Profile image of Harshit Singh
4 Years agoGrade 12th pass
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1 Answer

Profile image of Jayesh Vashishtha
4 Years ago
Dear student,
 
Joseph Proust put forward law of proportion in 1779. This law was stated by Proust as “In a chemical substance the elements are always present in definite proportions by mass”.

 
For 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 is in the same proportion by mass 3:8. 
 
 
regards,
team Askiitians