Question

Equal volume of two gases A and B are kept in two
separate vessels at the same temperature and pressure.
It the ratio of the molecular masses of A and B is 2 : 3 ,
find the ratio of the volumes of the two vessels.

Answer 1

Since under the identical conditions of temperature and pressure, the volumes of gases are directly proportional to their number of moles, [because according to Avogadro's law, V∝n at the same temperature and pressure.] the ratio of volumes of two gases, i.e., the ratio of volumes of two vessels. VA:VB=nA:nB=3:2.