Analysis of one of the nitrogen oxides showed that the mass fractions of nitrogen and oxygen

| September 2, 2021 | education

Analysis of one of the nitrogen oxides showed that the mass fractions of nitrogen and oxygen in it are equal to 36.84 and 63.16%, respectively. Determine the simplest formula of the oxide

First of all, let us denote the mass of nitrogen and oxygen atoms in the formula through x and y. From the periodic table, the atomic masses of these elements are equal to 14 and 16. And it turns out that in this compound there will be such a proportion.

14 x: 16 y

And according to the problem statement, this ratio is 36.84: 63.16.

And from here follows.

14 x: 16 y = 36.84: 63.16

And we get that x: y = (36.84: 14): (63.16: 16) = 2.63: 3.9475 = 1: 1.5 = 2: 3 (we get this after multiplying by two, since the formula should contain smallest integers).

So this is the formula.

N2O3 or nitric oxide.



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