ISSR CLASSES
Checkpoint Science
iGCSE Chemistry
iGCSE Physics
iGCSE Coordinated Science
A-Level Chemistry
PRACTICALS
Practicals Home
Practicals A-Z
Study Plan for Practical Work
It is worth checking your alcohols before the experiment. They often appear to be acidic probably as a result of atmospheric oxidation. Washing with sodium carbonate solution and water should solve this problem. Stress to students that they should be looking at the colour of the indicator in the aqueous layer in the case of immiscible alcohols.
Materials:
| Methanol (2 cm3) | Ethanol (2 cm3) |
| Propan-1-ol (2 cm3) | Butan-1-ol (2 cm3) |
| Full range indicator | |
| Test tubes (4) | Glass rod |
| Dropping pipette |