Chemistry 9701 · AS & A Level · Reaction kinetics

Reaction kinetics — practice question

A student makes pentan-1-ol by carrying out the alkaline hydrolysis of 1-iodopentane. She warms the reaction mixture very gently for 20 minutes. $\text{CH}_3\text{CH}_2\text{CH}_2\text{CH}_2\text{CH}_2\text{I} + \text{OH}^- \rightarrow \text{CH}_3\text{CH}_2\text{CH}_2\text{CH}_2\text{CH}_2\text{OH} + \text{I}^-$ If the student uses 1-chloropentane to prepare the same alcohol, she must alter the reaction conditions. Which change in condition should she make, and what is the correct reason for this change?

  • Aheat under reflux; C-Cl bond is more polar than the C-I bond
  • Bheat under reflux; C-Cl bond is stronger than the C-I bond
  • Croom temperature; C-Cl bond is more polar than the C-I bond
  • Droom temperature; C-Cl bond is shorter than the C-I bond

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