Question

Vapour density of a diatomic gas is 14.Atomic weight of the gas is

Answer 1

Atomic weight of the gas is 7 u.

Explanation:

As the gas is diatomic, its relative mass will be -

Relative mass of atom = 2 × atomic weight

Vapour density of a gas is equal to its relative mass.

Vapour density = Relative mass of atom

Vapour density = 2 × atomic weight

Rearranging for atomic weight,

Atomic weight = vapour density / 2

Atomic weight = 14 / 2

Atomic weight = 7 u

Hence, atomic weight of the gas is 7 u.