Question

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

Answer 1

Correct Answer - d
(d) `P_(H_(2)O)=760-722=(38)/(760)atm,n_(H_(2)O)=(0.9)/(18)`
`V=(0.9)/(18)xx(0.821xx300)/(38)xx760,V=24.63L`