Air contains N_(2) and O_(2) in the ratio of 4:1 by volume. The average conditions of temperature and pressure ?

Air contains N_(2) and O_(2) in the ratio of 4:1 by volume. The averag

1.	Air contains N_(2) and O_(2) in the ratio of 4:1 by volume. The average conditions of temperature and pressure ?
Answer» `12.0` `14.4` `15.6` `28.8` Solution :As under similar conditions of TEMPERATURE and pressure, equal volumes contain equal number of MOLES , therefore, molar ratio of `N_(2)=4//5=0.8` and mol fraction of `O_(2)=0.2` `:.` AVERAGE VAPOUR density of air `=(28.8)/(2)=14.4`