The following data are obtained when dinitrogen and dioxygen react together to formdifferent compounds:Mass of dinitrogen Mass of dioxygen(i) 14 g 16g(ii) 14 g 32 g(iii) 28 g 32 g(iv) 28 g 80g(a) Which law of chemical combination is obeyed by the above experimental data? Give itsstatement
Question
The following data are obtained when dinitrogen and dioxygen react together to formdifferent compounds:Mass of dinitrogen Mass of dioxygen(i) 14 g 16g(ii) 14 g 32 g(iii) 28 g 32 g(iv) 28 g 80g(a) Which law of chemical combination is obeyed by the above experimental data? Give itsstatement
Solution
The law of chemical combination obeyed by the above experimental data is the Law of Multiple Proportions.
The statement of this law is: "If two elements combine to form more than one compound, the masses of one element that combine with a fixed mass of the other element, are in the ratio of small whole numbers."
Here's how we can apply this law to the given data:
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In the first and second experiments, the mass of dinitrogen is constant (14g), while the mass of dioxygen changes from 16g to 32g. This is a simple doubling, which is a ratio of 1:2, a ratio of small whole numbers.
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In the third and fourth experiments, again the mass of dinitrogen is constant (28g), while the mass of dioxygen changes from 32g to 80g. This ratio is 1:2.5, which can also be expressed as 2:5, another ratio of small whole numbers.
Therefore, the given data obeys the Law of Multiple Proportions.
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