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 reached a steady value of 722 torr. If the experiment is done at `27^(@)C` and drying agent increases in weight by `0.9 g`, what is the volume of the flask? Neglect any possible vapour pressure of drying agent and volume occupied by drying agent.

Options

A. 443.34 L
B. 246.3 L
C. 12.315 L
D. 24.63 L

Answer

D

Explanation

`p_(H_2O) = 760 - 722 = (38)/(760) ` atm , `n_(H_2O) = (0.9)/(18) implies V = (0.9)/(18) xx (0.0821 xx 300)/(38) xx 760 , V = 24.63L`