The flow diagram below shows how an alkene can be used to prepare other organic compounds - NSC Physical Sciences - Question 4 - 2017 - Paper 2
Question 4
The flow diagram below shows how an alkene can be used to prepare other organic compounds. The letters A to G represent different organic reactions.
4.1 Write down ... show full transcript
Worked Solution & Example Answer:The flow diagram below shows how an alkene can be used to prepare other organic compounds - NSC Physical Sciences - Question 4 - 2017 - Paper 2
Step 1
Write down the type of reaction represented by A
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Answer
The reaction represented by A is an addition reaction (hydrogenation) where hydrogen adds across the double bond of the alkene.
Step 2
Write down the type of reaction represented by B
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The reaction represented by B is a substitution reaction (halogenation) where a halogen replaces a hydrogen atom in the alkene.
Step 3
Write down the type of reaction represented by E
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The reaction represented by E is an elimination reaction (dehydration) where water is removed to form an alkene from an alcohol.
Step 4
Write down the IUPAC name of compound X.
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The IUPAC name of compound X is 2-bromopropane.
Step 5
For reaction D, write down the type of elimination reaction.
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The type of elimination reaction for reaction D is dehydrohalogenation.
Step 6
For reaction D, write down TWO reaction conditions.
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Use of a concentrated strong base such as NaOH or KOH.
Heating the reaction mixture (hot conditions).
Step 7
Write down the FORMULA of an inorganic reactant needed for reaction F.
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The formula for the inorganic reactant needed for reaction F is H2O.
Step 8
Write down the Balanced equation, using structural formulae, for reaction G.
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