@ hopes
not volatile liquids also have vapours coz u see any liquid will have a gas phase coz there must be some bonds holding a liquid together these can be broken on application of energy 4get all tis
we are speakin about water ok n tats really volatile even at 1degree celcius ( rate low but still volatile )
@ yuiop
read ur answer again
see it is this amount of air that will be responsible for ur so called pressure .
water vapour also exists my dear so as water vapour is denser than air its effective mass increadses and hence pressure increases .
get it ????
ok dude read the topis " VAPOUR PRESSURE " FROM ANY PHYSICAL CHEMISTRY BOOK OR ........