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Question

In SO2 and SO3, the ratio of weight of oxygen that combines with a fixed weight of sulphur is 2:3. This illustrates the law of:

A
constant proportions
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B
conservation of mass
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C
multiple proportions
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D
reciprocal proportions
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Solution

The correct option is C multiple proportions
The law of multiple proportions says that if two elements form more than one compounds between them, then the ratios of the masses of the second element which combine with a fixed mass of the first element will be ratios of small whole numbers.

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