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Teacher and technician notes 5.4.3f[2]

This two stage preparation uses many important organic techniques and is a good preparation for the c and d practical assessment if you are following this route.

Materials:

Benzoic acid acid (8 g) Methanol (15 cm3)
Concentrated sulfuric acid (15 cm3) Anhydrous sodium sulfate (1 g)
0.5 M sodium carbonate (15 cm3) Concentrated nitric acid (3 cm3)
Ethanol (25 cm3) Ethoxyethane (1 cm3)
Hexane (9 cm3) Hydrocarbon solvent (15 cm3)
Ice
50 cm3 pear shaped flask (2) Liebig condenser
Heat-proof mat Bunsen burner
Tripod Gauze
100 cm3 separating funnel 100 cm3 conical flask (5)
25 cm3 measuring cylinder 920 Filter funnel
Filter paper Glass bend
Stillhead Thermometer pocket
Quickfit clips 0 to 360ºC thermometer
400 cm3 beaker (2) 10 cm3 measuring cylinder (3)
Dropping pipette 100 cm3 beaker
Buchner funnel Buchner flask
Filter paper to fit Buchner Chromatography sheet
Melting point tubes White tile
UV lamp Melting point apparatus
Balance with accuracy of at least ± 0.01 g

Students' worksheet

Risk assessment


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