Propan-1-ol can undergo a number of organic reactions, as indicated by the letters A to D in the diagram below - NSC Physical Sciences - Question 4 - 2018 - Paper 2
Question 4
Propan-1-ol can undergo a number of organic reactions, as indicated by the letters A to D in the diagram below.
Reaction B
Reaction D
Reaction A... show full transcript
Worked Solution & Example Answer:Propan-1-ol can undergo a number of organic reactions, as indicated by the letters A to D in the diagram below - NSC Physical Sciences - Question 4 - 2018 - Paper 2
Step 1
4.1.1 Write down the type of reaction represented by A
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Answer
The reaction represented by A is a substitution reaction. In this process, one functional group is replaced by another in the molecule.
Step 2
4.1.2 Write down the type of reaction represented by B
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The reaction represented by B is an elimination reaction, where a smaller molecule, such as water, is removed from the parent compound, resulting in the formation of a double bond.
Step 3
4.1.3 Write down the type of reaction represented by C
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The reaction represented by C is an esterification reaction. Here, an alcohol reacts with an acid to form an ester and water.
Step 4
4.1.4 Write down the type of reaction represented by D
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The reaction represented by D is an addition reaction. In this reaction, bromine adds across a double bond, resulting in a saturated compound.
Step 5
4.2.1 Function of H2SO4
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The function of H2SO4 in reaction C is to act as a catalyst. It promotes the reaction between the alcohol and the acid, facilitating the formation of the ester.
Step 6
4.2.2 IUPAC name of the organic product
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The IUPAC name of the organic product formed in reaction C is propyl ethanoate.
Step 7
4.2.3 Structural formula of the other organic reactant
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The structural formula of the other organic reactant (ethanoic acid) is as follows:
O
||
H3C-C-OH
This represents ethanoic acid (acetic acid), which reacts with propan-1-ol to form the ester.
Step 8
4.3 Use STRUCTURAL FORMULA for all organic reactants and products to write a balanced equation for reaction A
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The balanced equation for reaction A can be written as:
CH3CH2OH + CH3Br → CH3CH2Br + H2O
This equation shows the reaction between propan-1-ol and bromine, resulting in the formation of bromo-propane and water.
