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Bromine, Br₂, dissolves in unsaturated hydrocarbons and reacts immediately - HSC - SSCE Chemistry - Question 6 - 2009 - Paper 1
Question 6
Bromine, Br₂, dissolves in unsaturated hydrocarbons and reacts immediately. Which of the following is the best description of this process? (A) Bromine is polar and ... show full transcript
Worked Solution & Example Answer:Bromine, Br₂, dissolves in unsaturated hydrocarbons and reacts immediately - HSC - SSCE Chemistry - Question 6 - 2009 - Paper 1
Step 1
Which of the following is the best description of this process?
Answer
To determine the best description of the reaction of bromine with unsaturated hydrocarbons, we need to analyze the polarity of bromine and its behavior in this context.
Bromine (Br₂) is a diatomic molecule that is non-polar due to its symmetrical nature. When bromine interacts with unsaturated hydrocarbons (which contain double or triple bonds), it does not substitute hydrogen atoms but rather adds across the multiple bonds. Therefore, we can conclude that:
- D is the correct option: "Bromine is non-polar and reacts by adding bromine atoms across the double bond." This captures the essence of the chemical reaction taking place.