A-LevelChemistryHydrocarbonsMay/June 2020Paper 2 Q412 Marks
Hexane, C6H14, is a colourless liquid. Two test-tubes contain equal amounts of hexane. 1 cm³ of bromine, Br2(aq), is added to both test-tubes. One test-tube is kept in the dark and the other is exposed to sunlight. The table describes the appearance of each test-tube after one hour. test-tube conditions | observations ---|--- in the dark | no change, mixture remains orange in sunlight | colour of mixture fades to pale yellow
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