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Which law compares the different compounds \(SO_2\) and \(SO_3\) made from sulfur and oxygen?

Answer and explanation

Correct answer: Law of multiple proportions

The law of multiple proportions applies when the same two elements form more than one compound. In such compounds, the masses of one element that combine with a fixed mass of the other are in a simple whole-number ratio. This law compares different compounds, not different samples of one compound.

Here, sulfur and oxygen form two compounds, \(SO_2\) and \(SO_3\). For a fixed amount of sulfur, the oxygen amounts are in the ratio \(2:3\), a simple whole-number ratio. Therefore, the comparison is explained by the law of multiple proportions, so option A is correct. The law of definite proportions would concern the constant composition of one pure compound.

Related tags

ChemistryLaws-Of-Chemical-CombinationClass-11

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