Q4: Ethanol has a boiling point of 78°C. Water has a boiling point of 100°C. Describe how distillation is used to separate a mixture of ethanol and water.

Explanation:

A mixture of ethanol and water can easily be separated by distillation. Distillation separation technique utilizes the differences in boiling point of a mixture of two liquids.

Since water has a higher boiling point compared to alcohol, it makes it easier for the process of distillation to occur

when the volume of gas is   changed from   717.73 ml   to 852 ml   the temperature will   change   from 315   c to 452   c

    calculation

this is calculated using the charles law formula

that is,   v1/t1 = v2/t2

          v1=?

        t1 = 315 c   into   kelvin = 315 +273 = 588 k

        v2 = 852   ml

        t2 = 425c + 273 =698 k

make v1   the subject of the formula ( by   multiplying both side by t1)

  v1=( v2 xt1) / t2

v1= (852 ml   x 588 k)/ 698 k= 717.73 ml