Factors that favour an SN1 reaction

This type of question, asked 2 times: 11 Apr 2026 S1, 13 Apr 2026 S2. All 2 questions below, oldest first.

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Question 1
11 Apr 2026 S1
36 $Which one of the following factors proceeds more rapidly, unimolecular nucleophilic substitution reaction?$
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Question 2
13 Apr 2026 S2
36 $\mathrm{SN^1}$
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