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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. $$CH_2=CHCH_2CH_3 + X \to 2-chloropentane$$ $$2-chloropentane + sodium hydroxide solution \to Y$$ X and Y are given by |... show full transcript
Worked Solution & Example Answer:Two chemical reactions occur as follows - VCE - SSCE Chemistry - Question 10 - 2006 - Paper 1
Step 1
Identify the reactant and product for X
Answer
In the first reaction, the reactant is 'CH₂=CHCH₂CH₃', which is an alkene. The presence of 'X' suggests a halogen reaction is taking place, leading to the addition of this halogen to the alkene and resulting in '2-chloropentane'. Given the options, 'HCl' is the possible reagent since it reacts with alkenes to form haloalkanes.
Step 2
Identify the reactant and product for Y
Answer
The second reaction involves '2-chloropentane' reacting with sodium hydroxide, which is typically used in substitution reactions. The formation of 'Y' indicates that a substitution reaction has occurred to produce an alcohol. Based on the options, the product 'Y' can be determined as 'CH₃CH₂CH(CH₃)OH', which fits the expected product from '2-chloropentane' under these reaction conditions.