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CHEMISTRY 2.5
Name:
WORKSHEET FIVE
ALCOHOLS AND HALOALKANES
1.
2.
Draw structural formulae for the following organic compounds.
(a) 2-chloropropane
(b) butan-1-ol
(c) 2-methylpropan-2-ol
(d) 3-methylbutan-2-ol
Identify each of the haloalkanes and alcohols in Q 1. as primary, secondary or tertiary.
(a)
3.
(b)
(c)
(d)
Name each of the following organic molecules.
(a)
CH3CH2CH2CH2CH2OH
(b)
CH3-CH2-CH-CH2-CH3
OH
(c)
CH3-CH2-CH-CH2-CH2Cl
CH3
4.
Identify each of the haloalkanes and alcohols in Q 3. as primary, secondary or tertiary.
(a)
5.
(b)
(c)
Propan-1-ol can be oxidised by heating it with acidified potassium dichromate solution.
(a)
What is the initial colour of the acidified potassium dichromate solution?
(b)
What is the final colour of the solution?
(c)
Write the name of the organic product.
(d)
Write equation for this oxidation reaction.
(e)
If acidified potassium permanganate was used in the place of the potassium dichromate,
describe the colour change that would be observed during the reaction.
6.
The following carboxylic acids were made by oxidation of alcohols. Name the alcohols from
which they were made and draw the structural formulae of the alcohols you have named
Carboxylic acid
Structure of original alcohol
Name of original alcohol
CH3CH2CH2COOH
CH3COOH
CH3(CH2)5COOH
7.
The following reaction sequence was carried out in the lab.
(a)
Write the reactants needed to produce each reaction step in the boxes provided.
Ethanol
Ethene
Step 1.
Step 2.
Ethanol
Step 3.
Ethanoic acid
8.
(b)
Name the type of reaction occurring in step 1.
(c)
Name the type of reaction occurring in step 2.
(d)
Name the type of reaction occurring in step 3.
In order to distinguish between propan-1-ol and propene a student said it was necessary to use
bromine water rather than acidified potassium permanganate. Discuss this statement.