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Cambridge IGCSE Chemistry practice

Paper 4 structured question: Alkanes

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Alkanes

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Paper 4Theory (Extended)1 marks

Substitution reactions are important in organic chemistry.

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Substitution Reaction Example

Consider the reaction of ethane with chlorine under UV light, which produces chloroethane and hydrogen chloride.

  1. a

    State the type of reaction that occurs when ethane reacts with chlorine.

    Aim for approximately 1 distinct marking point.

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Paper 4 structured question: Alkanes

Paper 4Theory (Extended)1 marks

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Nucleophilic Substitution Reaction

In a nucleophilic substitution reaction, a nucleophile attacks a carbon atom bonded to a leaving group, resulting in the replacement of the leaving group by the nucleophile.

  1. a

    State what is meant by a nucleophile in this context?

    Aim for approximately 1 distinct marking point.

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