The vapour pressure of a solution (made by dissolving a solute in a solvent) is ____________ that of the pure solvent?

Related Mcqs:

A long cylinder and a sphere both of 5 cms diameter are made from the same porous material. The flat ends of cylinder are sealed. Both the cylinder and sphere are saturated with the same solution of sodium chloride. Later both the objects are immersed for a short and equal interval of time in a large tank of water which is well agitated. The fraction of salt remaining in the cylinder and the sphere are Xc and Xs respectively. Which of the following statement is correct ?

A. Xc > Xs B. Xc = Xs C. Xc < Xs D. Xc greater/less than Xs depending on the length of the cylinder...

Assuming that CO2 obeys perfect gas law, calculate the density of CO2 (in kg/m3) at 263°C and 2 atm ?

A. 1 B. 2 C. 3 D. 4...

Density of carbon dioxide is _________________ kg/Nm3 ?

A. 44/22400 B. 44/22.4 C. 22.4/44 D. None of these...

A car tyre of volume 0.057 m3 is inflated to 300 kPa at 300 K. After the car is driven for 10 hours, the pressure in the tyre increases to 330 kPa. Assume air is an ideal gas and Cv for air is 21 J/mole.K. The change in the internal energy of air in the tyre in J/mole is__________________?

A. 380 B. 630 C. 760 D. 880...

______________ equation gives the effect of temperature on heat of reaction ?

A. Kirchoff’s B. Maxwell’s C. Antoine D. Kistyakowsky...