Which compound can form when bromine water reacts with propene?
(A) 1-bromopropane
(B) 2-bromopropane
(C) 1,1-dibromopropane
(D) 1,2-dibromopropane - HSC - SSCE Chemistry - Question 11 - 2011 - Paper 1
Question 11
Which compound can form when bromine water reacts with propene?
(A) 1-bromopropane
(B) 2-bromopropane
(C) 1,1-dibromopropane
(D) 1,2-dibromopropane
Worked Solution & Example Answer:Which compound can form when bromine water reacts with propene?
(A) 1-bromopropane
(B) 2-bromopropane
(C) 1,1-dibromopropane
(D) 1,2-dibromopropane - HSC - SSCE Chemistry - Question 11 - 2011 - Paper 1
Step 1
Identify the reaction
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Answer
When bromine water reacts with propene, it undergoes an electrophilic addition reaction. This involves the addition of bromine across the double bond of propene.
Step 2
Consider the structure of propene
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Answer
Propene (C₃H₆) has a double bond between the first and second carbon atoms. The addition of bromine occurs at this double bond.
Step 3
Determine the possible products
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Answer
The addition of bromine can lead to the formation of either 1-bromopropane or 1,2-dibromopropane. However, the most likely product when considering the stability of the intermediate carbocation is 1,2-dibromopropane.
Step 4
Final answer selection
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Answer
Based on the reaction mechanism and the structure of the products, the correct answer is (D) 1,2-dibromopropane.
