Cyclohexane And Acetone Lab Report

Based on the results, it is determined that the cyclohexane and ethyl acetate produce a positive deviation and chloroform and acetone create a negative deviation together. The cyclohexane and the ethyl acetate were unable to form any intermolecular bonds with each other, which created the low boiling points and the low azeotrope. The two compounds would rather stay in a pure status than be mixed together. The chloroform and the acetone created hydrogen bonding with each other, which increased the intermolecular forces. This caused the mixture to have high boiling points than the two pure liquids by themselves and create a high azeotrope. Fractional distillation is the separation of a mixture into fractions differing in boiling points. Figure 7 gives an example of the fractional distillation on an ideal solution.

In the figure, if you boil a liquid at a2, vapor from a2 on the vapour composition line. This condenses to give a liquid of that same composition at a3. This pattern of condensing vapour and obtaining liquid of the same composition repeats until the pure liquid is obtained from each compound. The chloroform and acetone were able to undergo fractional distillation to be separated from each other, which is shown on Figure 4. For the cyclohexane and the ethyl acetate, the presence of the low azeotrope prevents the components of the mixture from being separated by fractional distillation, which can be seen in Figure 8. Figure 8: The graph shows the phase diagram of cyclohexane-ethyl acetate mixture. The arrows lead to the minimum boiling