Question

2. Four samples of carbon dioxide were prepared by using different methods. Each sample, on analysis,
was found to contain 27.3% of carbon. Name the law which is in agreement with this observation.

Answer 1

Answer:

law of definite (fixed) proportion (also known as law of constant composition) is applied here which states that;

"different samples of same compound contain it's component elements in fixed ratio by mass and does not depend on it's source and method of preparation."

Answer 2

Answer:

The law of definite proportion

Explanation:

Each samples of carbon dioxide was found to contain only 27.3% of carbon, even though prepared by using different methods. This is due to the law of definite proportion which states that "a chemical compound always contains exactly the same proportion of elements of mass". This law is also know as Proust's law, law of constant proportion and law of constant composition.

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