Alcohols questions

Assignment: Questions on Topic 10.2 : Functional groups (Alcohols)

This page of questions can be marked as direct student access either for assigning as a test or for students to work on in their own time. If you do not wish to use student access, links to downloadable versions of the questions and, separately the worked answers, can be found at Printable versions of written tasks.

State the equations for the complete combustion of:

i.  ethanol

1 line
Show model answer

ii. propan-2-ol

1 line
Show model answer

 

 

Propan-2-ol and propan-1-ol can both be oxidized by a warm acidified solution of potassium dichromate(VI).

i. Describe what would be observed in both cases.

3 lines
Show model answer

ii. State the IUPAC name of the product from the oxidation of propan-2-ol and state the simplified equation (use [O] to represent the oxygen from the acidified potassium dichromate(VI) solution).

2 lines
Show model answer

iii. The half-equation for the reduction of the acidified dichromate(VI) ion is:
Cr2O72–(aq) + 14H+(aq) + 6e– → 2Cr3+(aq) + 7H2O(l)
Deduce the full equation for the oxidation of propan-2-ol using acidified Cr2O72– ions.

5 lines
Show model answer


iv. State the IUPAC name of the two organic products that can be formed when propan-1-ol is oxidized by warm acidified potassium dichromate(VI) solution.

1 line
Show model answer


v. Explain why propan-1-ol can form two different organic products whereas propan-2-ol only forms one organic product when oxidized by acidified potassium dichromate(VI) solution.

5 lines
Show model answer

vi. Describe how you could separate the two organic products formed from the oxidation of propan-1-ol.

3 lines
Show model answer

 

 

The precise use of language is important in chemistry. Many books state that tertiary alcohols, such as 2-methylpropan-2-ol, (CH3)3COH, are not readily oxidized. Evaluate this statement.

3 lines
Show model answer

 

 

i. State the equation for the formation of methyl salicylate from the reaction between salicylic acid and methanol. (Upload your answer as an image or as a pdf file.)

5 lines
Show model answer


ii. Aspirin is also an ester that can be formed from salicylic acid. Suggest a possible way in which it could be synthesised starting with salicylic acid.

3 lines
Show model answer

iii. State the name of salicylic acid according to the IUPAC naming system.

1 line
Show model answer

 

 

All materials on this website are for the exclusive use of teachers and students at subscribing schools for the period of their subscription. Any unauthorised copying or posting of materials on other websites is an infringement of our copyright and could result in your account being blocked and legal action being taken against you.