if equal volume of Oxygen and nitrogen are mixed together the vapour density of mixture at constant temperature and pressure is
 plz explain in deatil.(ans=15)

Dear Student,

Vapour density of O₂ = mol. wt /2 = 32/2 =16

Vapour density of N₂ = mol. wt /2 = 28/2 =14

Therefore,  the vapour density of mixture at constant temperature and pressure if the equal volume of Oxygen and nitrogen are mixed together is = 1/2*16 + 1/2*14 = 15

Regards,