Exit to H3 further reaction mechanisms

Nucleophilic substitution written questions

Compare H3 Chemistry SN1 and SN2 rates, profiles and stereochemistry in written questions, then assess mechanism explanations with marking guidance.

  • GCE A-Level H3 Chemistry 2027
Learning goals
  • Explain nucleophile effects on substitution rate
  • Explain leaving-group effects on substitution rate
  • Explain substituent effects on substitution rate
  • Compare SN1 and SN2 profiles, rate laws and steady-state reasoning
  • Compare SN1 and SN2 stereochemistry and ion-pair effects
  • Apply substituent effects to SN1 and SN2
  • Evaluate competition between SN1 and SN2

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