Question

A compound containing two nitrogen atoms in its molecule has 30.43% nitrogen. Calculate the molecular weight of the compound.(Given, N = 14) [Ans: 92.01]
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Answer 1

Solution

(i) Calculation of empirical formula

Empirical formula =NO2

(ii) Calculation of molecular formula

Empirical formula mass = 14 +2 × 16 = 48

Molecular mass = 92

n=Molecular massEmpirical formula mass=9246=2

Molecular formula =2(NO2)=N2O4.

Hope this is helpful.