Question

2. The molecular formula of an organic compound is
H.CO2. What is its empirical formula?​

Answer 1

The empirical formula of an organic compound containing carbon and hydrogen is CH

2

. The empirical formula mass is 14 g/mol respectively.

The mass of one litre of this organic gas is exactly equal to that of one litre of N

2

. In other words, the mass of one mole of this organic gas is exactly equal to that of one mole of N

2

(as volume is directly proprotional to the number of moles). It is equal to 28 g/mol.

n=

empirical mass

Molecular mass

=

14

28

=2

Therefore, the molecular formula of the organic gas is 2×CH

2

=C

2

H

4

.