If vapour pressure of a solution is higher than that of predicted by Raoult's law
+ ve deviation
- ve deviation
Ideal behaviour
Both a and b
Eg of liquid-liquid solution is
Oxygen dissolved in water
Glucose dissolved in water
Ethanol dissolved in water
Mixture of oxygen and nitrogen gas
If mass of solute is 2g and the mass of solvent is 18 g, then the mass percentage is
50%
25%
40%
10%
When solute is present in trace amount ,then the concentration is expressed in
Mole fraction
Mass percentage
Molarity
Parts per million
A 5% solution of cane sugar (mol wt = 342) is isotonic with 1% solution of a substance X. The molecular weight of X is
34.2
171.2
68.4
136.8
Factors affecting solubility are
Nature of substance
Temperature
Pressure
All the above
The number of moles of the solute per kilogram of the solvent is called
Molality
Normality
Mass
Bromo ethane and chloro ethane is an eg of
Non ideal solution
Perfectly ideal
Nearly ideal
Both b and c
The solubility of a solid in a liquid by temperature is explained by
Henry’s law
Le Chateliers principle
Boyle’s law
Dalton’s law
