Question

A mixture of nitrogen and water vapours is admitted to falsk at 760 torr which contains a sufficient solid dryig agent, after long time the pressure reached a stedy value of 722 torr. If the experiment is done at `27^(@)C` and drying agent increaes in weight by 0.9gm, what iws the volume of flask? Neglect any possible vapour pressure of drying agent and volume occupied by drying agent.
A. 443.34L
B. 246.3L
C. 12.315L
D. 24.63L

Answer 1

Vapore pressure of water =760-722=38 torr
`n_(H_(2)O)=(0.9)/(18)=0.05`
`V=(nRT)/(P)=(0.05xx(0.0821)(300))/((38)/(760))=24.63L`