PROCEDURE :

1. Cleaning the Setup : The setup is cleaned to start a new Experiment.

2. Mixing in given ratios : A mixture of benzene and toluene is prepared and put into the flask.

3. Power is Supplied : Then the power is supplied and the mixture begins to boil.

4. Equilibrium is Reached: After some time equilibrium is reached, this is marked by steady temperature in both the phases.

5. Measuring RI : Samples of condensed vapor and liquid are taken. To calculate the composition we need to measure the refractive index of the sample and look into the chart.

 

Fig : 1.3 Mole fraction Vs Temperature plot

 

NOMENCLATURE :

x*	equilibrium composition of benzene in liquid phase
y*	equilibrium composition of benzene in vapor phase
Teq	equilibrium temperature
Tt, boil	Boiling temperature of pure Toluene
Tb, boil	Boiling temperature of pure Benzene
a	Relative Volatility