Which of the following situations demonstrates the law of definite proportions?

Question

Which of the following situations demonstrates the law of definite proportions?

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Which of the following situations demonstrates the law of definite proportions?

When 14.0 g of nitrogen and 32.0 g of oxygen are mixed and react, there is no measurable change in mass during the reaction. When 20.0 g of nitrogen and 32.0 g of oxygen are combined and allowed to react in two separate experiments, both times the product contains 14.0 g of nitrogen and 32.0 g of oxygen. Nitrogen and oxygen gases are mixed to produce a sample consisting of 20.0 g of nitrogen and 32.0 g of oxygen. Nitrogen and oxygen are gases found in air, of which nitrogen makes up approximately 79 percent and oxygen makes up approximately 21 percent.

Explanation / Answer

Here correct option is B.

Here we can see that the proportion one mole of N and two mole of O is constant for both experiment.

And law of definite proportion state that a given chemical compound always contain it's component element in a fixed ratio.

So, this situation demonstademthe law of definite proportion.

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