Laws of Definite Proportions, Multiple Proportions
Pure samples ...
Question
Pure samples of water always yield 88.89% of oxygen and 11.11% of hydrogen, by mass. This can be explained by using the law of:
A
Conservation of mass
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B
Constant proportions
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C
Multiple proportions
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D
Reciprocal proportions
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Solution
The correct option is B Constant proportions The law of definite proportions states that a given chemical compound always contains its component elements in a fixed ratio by mass and does not depend on its source and the method of preparation. Therefore, the ratio of H:O in water = 11.11:88.89=1:8 which will be constant in any sample of water irrespective of the source and the method of preparation