Test for Unsaturation (AQA A-Level Chemistry): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What types of bonds do unsaturated organic compounds contain?
What types of bonds do unsaturated organic compounds contain?
or bonds
What colour does bromine water appear?
What colour does bromine water appear?
Orange-brown
What happens to bromine water when added to an unsaturated compound?
What happens to bromine water when added to an unsaturated compound?
It decolourises to colourless
What happens to bromine water when added to a saturated compound like an alkane?
What happens to bromine water when added to a saturated compound like an alkane?
It remains orange-brown
What type of reaction occurs when bromine reacts with an alkene?
What type of reaction occurs when bromine reacts with an alkene?
Electrophilic addition
What intermediate forms when an alkene reacts with bromine?
What intermediate forms when an alkene reacts with bromine?
A bromonium ion
What product forms when an alkene reacts with bromine?
What product forms when an alkene reacts with bromine?
A dibromoalkane
What observation distinguishes cyclohexene from cyclohexane when bromine water is added?
What observation distinguishes cyclohexene from cyclohexane when bromine water is added?
Cyclohexene decolourises it
What part of the alkene attacks the bromine molecule in the mechanism?
What part of the alkene attacks the bromine molecule in the mechanism?
The electrons of the bond
What role does the ion play in the bromine addition mechanism?
What role does the ion play in the bromine addition mechanism?
Acts as a nucleophile