chemistry chapter 2 solution ( part 2)

*Molarity of Dilusion

*Difference between molarity and molality

*Equivalent mass

*Normality

*Vapour pressure

*Factor on which vapour pressure depends.

1. It does not depend upon shape\ size of container.

2. Depend upon nature of substance

Ex. H2o.                          c2 h5 oH

Water.                          Ethanol

*Substance

Substance are two types.

1. Volatile

2. Non volatile

*Vapour pressure of solution containing one volatile liquid.

                           Solution

(B) Salute.                        Solvent (A)

  ( Volatile liquid.)         ( Volatile liquid)

      p0B.                                         p0A

*RAULT'S  LAW

In a solution, the potential vapour pressure of each compound is directly proportional to the mole fraction of that compound.

Derivation of Rault's law

Vapour pressure of an ideal solution varies is from zero to the vapour pressure of pure solvent.

*Vapour pressure of solution containing non volatile solute.

Solution

(B)solute                    (A) Solvent  Non volatile.                Volatile

Solids.                       Liquids

Urea =NH2CONH2=60    

Glucose= C2 h12 o6=180

Sucrose= C12h22 o11=342