Practical 25 CinC Alkanes
(Simplest Hydrocarbons)
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Practical 25 CinC Alkanes (No Cracking of alkanes) GAS ON HaZCard : ,15A,15B, 45A, 45B, 91A ,98A
Waste 1 500 cc Conical flask : Sodium Thiosulphate 1mol. for Bromine
Waste 2 500 cc Conical flask: General for Alkanes
Set per pair students
4 X Test tubes and rack and bungs
pens for test tubes
Gloves
Teat pipettes pipettes filler
Distilled water
Boiling tubes and bungs (To collect methane gas from tape)
250 cc beaker
Small glass trough or large beaker
Hard-glass watch glass (Pyrex) from chem. prep.
Aluminium foil
Splints
(Hexane or Cyclohexane) Hexane, n-Hexane in picture in Fume
paraffin oil (medicinal paraffin for cracking alkane only)
paraffin wax
Bromine in Fume
Sodium thiosulphate(VI) solution (available for waste and spills bromine)
Conc. Sulphuric acid
Bromine water make fresh in Fume
Potassium manganate (VII) Potassium permanganate solution about 0.1 mol. (Make fresh for titration otherwise with A level stock bottle under the sing Chem. prep.)
Dilute Sodium Hydroxide 2M
Access to Fume cupboard
Bromine and Glass pipette in fume Bromine Water in fume
Potassium Manganate 0.02M-Sodium Hydroxide 2M Aluminium foil,Paraffin wax -Hexane, n-Hexane<->in fume Waste Br2/Br2H2O Sodium Thiosulphate
Waste Alkanes Potassium Manganate 0.02M (Have to be fresh make with Distilled water, not Acid Sulfuric see note) - Sodium Hydroxide 2M
Hexane, n-Hexane in Fume Conc. Sulphuric acid Glass pipette Distilled water
If there is no sun use the UVA light as show
NO Cracking of alkanes
no middle apparatus
check tubing is slice up
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