Which statement is correct about both 2-methylbutan-1-ol and 2-methylbutan-2-ol?
A They can be formed by alkaline hydrolysis of esters - AQA - A-Level Chemistry - Question 11 - 2018 - Paper 3
Question 11
Which statement is correct about both 2-methylbutan-1-ol and 2-methylbutan-2-ol?
A They can be formed by alkaline hydrolysis of esters.
B They can be oxidised by... show full transcript
Worked Solution & Example Answer:Which statement is correct about both 2-methylbutan-1-ol and 2-methylbutan-2-ol?
A They can be formed by alkaline hydrolysis of esters - AQA - A-Level Chemistry - Question 11 - 2018 - Paper 3
Step 1
A They can be formed by alkaline hydrolysis of esters.
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Answer
This statement is incorrect. 2-methylbutan-1-ol and 2-methylbutan-2-ol cannot be directly formed from alkaline hydrolysis of esters.
Step 2
B They can be oxidised by reaction with acidified potassium dichromate(VI).
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Answer
This statement is also incorrect. Primary and secondary alcohols can oxidize depending on their structure, and acidified potassium dichromate(VI) would oxidize 2-methylbutan-1-ol but not 2-methylbutan-2-ol effectively.
Step 3
C They can be formed by hydration of 2-methylbut-2-ene.
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Answer
This statement is correct. Both alcohols can be produced by the hydration of 2-methylbut-2-ene, which involves the addition of water across the double bond.
Step 4
D They have four peaks in their 13C NMR spectra.
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Answer
This statement is incorrect for both alcohols. The number of peaks in the 13C NMR spectrum corresponds to the number of unique carbon environments in the molecule.
