Question:
hydrogen and oxygen are known to form two compounds . The hydrogen contains of the 2 compounds are 42.9% and 27.3% respectively . Show that this data is in agreement with law of multiple proportions ?
Answer:
Both the compounds are of hydrogen and oxygen. In 100 gm,
For the first compound,
hydrogen is 42.9g
so, oxygen is 57.1g
In the second compound, hydrogen is 27.3g
so, oxygen is 72.7g
Therefore the mass of hydrogen that combines with 1 g of oxygen = 27.3 / 72.7 = 0.375g
Thus the ratio of hydrogen combining with a fixed mass of oxygen is 0.75 : 0.375 or 2:1 which proves the law of multiple proportions.
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