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Two chemical reactions occur as follows - VCE - SSCE Chemistry - Question 10 - 2006 - Paper 1
Question 10
Two chemical reactions occur as follows. CH₂=CHCH₂CH₃ + X → 2-chloropentane 2-chloropentane + sodium hydroxide solution → Y X and Y are given by | X | Y | | --- |... show full transcript
Worked Solution & Example Answer:Two chemical reactions occur as follows - VCE - SSCE Chemistry - Question 10 - 2006 - Paper 1
Step 1
X → 2-chloropentane
Answer
To identify X, we recognize that the reaction involves converting an alkene to a chlorinated product. Given that 2-chloropentane results from chlorination, X must be chlorine gas (Cl₂). This is because alkene compounds undergo electrophilic addition with Cl₂ to form vicinal dihalides.
Step 2
2-chloropentane + sodium hydroxide solution → Y
Answer
The reaction of 2-chloropentane with sodium hydroxide (a strong base) leads to a substitution reaction where the chloride ion is replaced by a hydroxyl group (-OH), resulting in the formation of the corresponding alcohol. Thus, the product Y is CH₃CH₂CH₂CHOH₃ (pentanol).