A student shakes a sample of an unknown hydrocarbon with orange bromine water at room temperature. The mixture becomes colourless.
Which conclusion is correct?
The hydrocarbon has been oxidised to form a carboxylic acid.
The hydrocarbon contains a carbon–carbon double bond.
The hydrocarbon is saturated, so it has only single bonds.
The hydrocarbon has reacted with the water to form an alcohol.
97 exam-style questions on AQA GCSE Chemistry 7.2 Reactions of alkenes and alcohols, covering 7.2.1 Structure and formulae of alkenes, 7.2.2 Reactions of alkenes, 7.2.3 Alcohols, 7.2.4a Carboxylic acids, and 7.2.4b Carboxylic acids as weak acids. Each one has a worked solution and a mark scheme showing where the marks go.