QUE : WHAT IS NORMAL BOILING POINT ?

 SOL : NORMAL BOILING POINT

 the normal boiling point of a liquid is the temperature at which its vapour pressure becomes equal to one atmospheric pressure.

QUE: WHAT IS BOILING POINT?

 SOL: Boiling point  the boiling point of a liquid is the temperature at which its vapour pressure becomes equal to external pressure that surrounds the liquid. 

QUE : WHAT IS RELATIVE LOWERING IN VAPOUR PRESSURE?

 SOL:  Relative lowering in vapour pressure

when a non-volatile solute is added to the solvent the vapour pressure of the solution become less than that of the solvent.

QUE : WHAT ARE IMPORTANT COLLIGATIVE PROPERTIES ?

 SOL : The important colligative properties of ideal or dilute solution are -

(i) Relative lowering in the vapour pressure.

(ii) Elevation in the boiling point temperature.

(iii) Depression in the freezing point temperature.

(iv) Osmotic pressure.

QUE: WHAT ARE THE CONDITION TO CALCULATE COLLIGATIVE PROPERTIES ?

 SOL: Important conditions

1 solute must be non-volatile

2 solute must not dissociate or associate in the solution.

3 solution must be dilute in nature.

QUE :WHAT IS DILUTE SOLUTION ?

 SOL: Dilute solution  it is the solution in which the amount of solute is very small as compared to the amount of solvent. Dilute solution obeys Raoult's law.

QUE : WHAT ARE COLLIGATIVE PROPERTIES ?

 Solution :   Colligative properties for ideal or dilute solution

 colligative properties of ideal or dilute solution are the properties which depend only upon the number of solute particle or upon the molar concentration of the solute particles present in the solution irrespective of their nature.

QUE : WHAT IS HENRY'S LAW?

 SOL: HENRY'S LAW  "the solubility of a gas in a liquid is directly proportional to the pressure of the gas over the solution at a given temperature

 m  ∝   P   or

                                            m = k  P   where k is Henry's constant.

In the  mixture of  non reacting gases in a solution, solubility of each gas is directly proportional to its own partial pressure. Solubility can be expressed in terms of mole fraction ,then Henry's law can be stated as

 " mole fraction of the gas in a solution is proportional to the partial pressure of the gas"

                               x   ∝  p            where, x is a mole fraction of the gas in solution

      or               p = KH x              where KH is called Henry's law constant.

QUE : WHAT ARE SUPERSATURATED SOLUTION ? HOW THEY ARE PREPARED?

 SOL SUPERSATURATED SOLUTION   When a saturated solution is prepared at higher temperature and cooled, a solution is formed, that contains more than maximum amount of solute that required for a saturated solution at that temperature and is called supersaturated solution. Generally it is unstable and reverses back to the saturated solution when excess of solute comes out from solution to the solid state.

QUE: WHAT ARE SATURATED AND UNSATURATED SOLUTION?

 SOL : SATURATED SOLUTION   a solution which remains in contact with undissolved solute is termed as saturated solution. or                                                                                                                                        a solution in which amount of solute is maximum and in which no more solute can be dissolved in the given amount of the solvent.

UNSATURATED SOLUTION   a solution that contains less than the maximum amount of the solute that is capable of being dissolved at a given temperature.