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Calculate the number of moles of gas present in the container of volume 10L at 300K. If the manometer containing glyceric shown 3.8m difference in level as shown diagram. [volume of gas in limb is negligible] [Take R=0.08 atm-lit `K^(-1)"mol"^(-1)`, Density of glyceric`=2.72 gm//ml, `d_("mercury")=13.6gm//ml`] A. 0.81 moleB. 0.49moleC. 0.64moleD. 0.55mole

Answer» `P_("gas")=P_("atm")+[3.8mtxx(d_("glycerine"))/(d_(Hg))]`
`=76+76cm=152 cm "of" Hg "or" 2` atm
`n=(PV)/(RT)=(2xx10)/(0.08xx300)=(20)/(24)=0.81` mol


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