The mole fraction of He gas in a saturated solution at `20^@C` is `1.25x10^-6`. Calculate the pressure of He gas above the solution. `(k_H of He at 20^@C= 144.98 k `bar

Calculate the pressure exerted by two moles of gas at 27^@C in a 1 litre flask.

What is the molarity of F^(-) ions in a saturated solution of BaF_(2) ? (K_(sp)=1.0xx10^(-6))

At some temperature the vapour pressure of pure benzene, C_(6) H_(6) is 0 . 256 bar and vapour pressure of toluene, C_(6) H_(5) CH_(3) is 0 . 0 925 bar, if the mole fraction of toluene in a solution is 0 . 60 (i) What is the total vapour pressure of the solution ? (ii) Calculate the composition of the vapour phase in terms of mole fraction.

Calculate pOH of 0.1 M aq. Solution of weak base BOH (K_(b)=10^(-7)) at 25^(@)C.

A solution of glucose in water labelled as 10% (W/W). The density of solution is 1.20 g mL^(-1) . Calculate mole fraction of each component in solution.

200 cm^3 of an aqueous solution of a protein contains 1.26g of the protein . The osmotic pressure of such a solution at 300K is found to be 2.7 xx 10^-3 bar. Calculate the molar mass of the protein (R=0.083 L bar mol^-1 K^-1 )

Calculate mole fraction of KI if density of 20% (mass/mass) aqueous solution of KI is 1.202 gmL^-1 ?

A sample of nitrogen gas occupies a volume of 1.0L at a pressure of 0.5 bar and at 40∘C. Calculate the pressure the gas if compressed to 0.225ml at −6∘C

The vapour pressure of the solvent decreased by 10 mm of Hg when a non volatile solute was added to the solvent. The mole fraction of the solute in the solution is 0.2. What should be the fraction of the solvent if a decrease in vapour pressure of 20 mm of Hg is desired: