A mixture of acetone and toluene was distilled in a distillation flask. On slow heating it was found that temperature became constant at 56°C for some time and the residual liquid left was toluene. When the heating was continued, again the temperate became constant at 80°C.
Answer the following questions.
(a) What is the boiling point of acetone and toluene ?
(b) Why was it possible to separate acetone from toluene ?
(c) Why does temperature remain constant for some time at 56°C even though heating was continued.
(a) The boiling point of acetone and toluene are 56°C and 80°C respectively.
(b) The mixture of acetone and toluene could be separated by simple distillation because these two miscible liquids have a large difference in their boiling points.
(c) The temperature at 56°C remains constant for some time because heat given at this temperature first gets converted into latent heat of vaporisation of acetone.
