Distillation essays

Distillation essays Lab Report Summer, 2002 Purpose: The Purpose of this experiment was to test the theory of Simple vs. Fractional Distillation using cyclohexane and toluene. 20 ml of Cyclohexane and 20 ml of Toluene were placed in a 100 ml round bottom flask. The contents were swirled to mix and a boiling rock was added. The Simple Distillation apparatus was setup using technique 7.3. A 50 ml graduated cylinder was used to collect the distillate. Heat was turned. The temperature of the vapor was recorded when each ml was collected. When 30 ml of distillate had been collected and 30 temperature readings had been obtained, the heat was turned off. After letting the apparatus cool down, the distillate and the pot liquid were discarded in the waste jar. This lab was a group effort. Two students performed the Simple Distillation procedure and Two students performed the Fractional Distillation. The data was shared between the groups. In the fraction distillation procedure, a piece of cotton was used to stop the beads from falling, but that piece of cotton proved to do more harm than help in the lab. Students were advised to do the procedure without the piece of cotton. The data gathered from simple distillation follows the the theory but the data shared from another group for farctional distillation did not prove the theory of simple vs. fractional distillation theory. In the data for the Fractional distillation, there was no real sudden rise in the temperatures. ...