Which reaction is faster and why? because F is a better leaving group that I bec

Question

Which reaction is faster and why? because F is a better leaving group that I because I is a better leaving group that F because F stabilizes the reactant better than 1 because I stabilizes the reactant better than F The reaction rates are equivalent. Consider nucleophilic substitution reactions of alkylhalides, where a moderately reactive nuclcophil which of the following sets of conditions is the Sx2 mechanism most likely predominant? primary substrate, aunhc condition* 'secondary substrate, aciiltu c'Oirdftions -K'rtiary juKunil

Explanation / Answer

20. Answer: (b)

This is SN2 Nucleophilic Substitution Reaction. Since electronegativity of F is higher than iodine (I). So, There is high energy required to break C-F bond than C-I bond. Since iodine is better leaving group so reaction (B) is faster.

21. Answer (d) secondary substrate, basic condition

22. Answer (a) Energy of rate determinig step is the difference between points 2 and 1.

23. Answer (b) point 3 shows an intermediate.

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