Item no.: P3031501
Principle
The separation power of a rectification (fractionating) column can be determined using an appropriate binary mixture whose equilibrium composition is measured in the distillation flask and in the domed glass head of the distillation apparatus. The number of theoretical trays can be numerically or graphically obtained from the measured values.
Tasks
- Prepare 10 mixtures of methyl cyclohexane and n-heptane with substance ratios (mole fractions) from 0 to 1 and with step width of approximately 0.1. To record a calibration curve, determine the refractive indices of the mixtures and plot them against the mole fractions.
- Distill a mixture of methyl cyclohexane and n-heptane in a rectification column with total reflux until an equilibrium has been established. Determine the composition of the condensate and the number of theoretical trays in the column for a throughput of 500 and 1000 ml/h.
What you can learn about
- Bubble tray column
- Rectification
- Raoult’s law
- Henry’s / Dalton’s law
- Boiling-point diagram
- Reflux ratio
Necessary accessories
- Precision balance 620g/0.001g