JAMB - Chemistry (2020 - No. 2)
Which of the following can be obtained by fractional distillation?
Nitrogen from liquid air
Sodium Chloride from sea water
Iodine from solution of Iodine in carbon tetrachloride
Sulphur from the solution of sulphur in carbon disulphide
Wyjaśnienie
Fractional distillation is used to separate mixtures into its component parts or fractions with the difference in boiling points between successive fractions must be more than 10°C. An example is the liquid nitrogen and oxygen are then separated by fractional distillation .