The Addition of Br₂ Is Used as the Reaction to Distinguish

question 50

Multiple Choice

The addition of Br₂ is used as the reaction to distinguish between alkanes and alkenes.What is the observation that accompanies this test?

• A) A bright red color is produced when Br₂ reacts with an alkene.
• B) Bromine dissolves in alkanes but not in alkenes.
• C) Bromine is a dark red liquid.When it adds to the double bond of an alkene to make the dibromide,it becomes colorless.
• D) The red color of bromine disappears when it dissolves in alkanes.
• E) Bromine reacts with alkanes to form a precipitate.

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