Equal masses of H2, O2 and CH4have been taken in a container of volume V at temperature 27°C in identical conditions. The ratio of the volumes of gases H2:O2: CH4 would be

According to Avogadro's hypothesis, ratio of the volumes of gases will be equal to the ratio of their no. of moles. So, no. of moles=  Mass  Mol. mass nH2=w2;nO2=w32;nCH4=w16 So, the ratio is w2:w32:w16 or 16:1:2 .