'n' moles of a non electrolyte are added to 'N' moles of solvent. The addition causes a lowering in vapour pressure of solvent by 20%. The ratio of moles of solvent and its solute is.

How is the vapour pressure of a solvent affected when a non volatile solute is dissolved in it?

If a non-volatile solute is dissolved in a volatile solvent relative lowering of vapour pressure is equal to

Vapour pressure of a solvent containing nonvolatile solute is:

The vapour pressure of a solution having solid as solute and liquid as solvent is:

Relative loweringof vapour pressure of a dilute solution is 0.2 . What is the mole fraction of non-volatile solute ?

When non-volatile solute is added to a pure solvent, the:

The vapour pressure of a solution of a non-volatile electrolyte B in a solvent A is 95% of the vapour pressure of the solvent at the same temperature. If the molecular weight of the solvent is 0.3 times, the molecular weight of solute, the weight ratio of the solvent and solute are:

The plot given below shows P – T curves (where P is the pressure and T is the temperature) for two solvents X and Y and isomolal solutions of NaCl in these solvents. NaCl completely dissociates in both the solvents. On addition of equal number of moles of a non-volatile solute S in equal amount (in kg) of these solvents, the elevation of boiling point of solvent X is three times that of solvent Y. Solute S is known to undergo dimerization in these solvents. If the degree of dimerization is 0.7 in solvent Y, the degree of dimerization in solvent X is ______________.

Which of the aqueous equimolal solution will have its vapour pressure near to solvent ?

The mole fraction of the solvent in the solution of a non-volatile solute is 0.980. The relative lowering of vapour pressure is :