Question

A 1.525g sample of a compound between nitrogen and hydrogen contains 1.333g of nitrogen. Calculate its empirical formula

Answer 1

Answer:

NH2

Explanation:

The mass of hydrogen in the sample = 1.525g- 1.333g

= 0.192g

Dividing the 2 masses by the relative atomic mass of hydrogen and nitrogen =

Hydrogen:0.192/1.008 = 0.1905

Nitrogen: 1.333/14.007 = 0.09517

The ratio of nitrogen to hydrogen = 0.09517/0.9517

= 1:2

So, the Empirical formula is NH2.

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