The test for unsaturated compounds

1 mark · Normal

Which observation confirms that a compound is an alkane, rather than an alkene, when tested with bromine water?

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Correct option: The solution stays orange.

Common mistakes: choosing 'becomes colourless' (alkene result)

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Marking points

B1 · 1 mark · Correctly identifies 'The solution stays orange.'

Worked solution

Alkanes do not react with bromine water, so the orange colour remains.