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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.