18. Predict the two most likely mechanisms for the reaction of 2-iodohexane with sodium ethoxide.(A)SN2 and SN1 (B) E1 and E2 (C) SN2 and E2(D) E1 and SN1 (E) E2 and SN1

18. Predict the two most likely mechanisms for the reaction of 2-iodohexane with sodium ethoxide.
(A)S_N2 and S_N1
(B) E1 and E2
(C) S_N2 and E2
(D) E1 and S_N1
(E) E2 and S_N1

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統計： A(0), B(0), C(0), D(0), E(1) #3829717

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2026/05/30

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正確答案是 (C) SN2 and ...

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21. Which of the following statements correctly describes the contribution of △S° to△G°?(A) The entropy term makes a greater contribution to AG° at high temperatures.(B) The entropy term makes a greater contribution to AG° at low temperatures.(C) The entropy term makes a greater contribution to AG° in exothermic reactions.(D) The entropy term makes a greater contribution to AG° in endothermic reactions.(E) The entropy term always makes a more significant contribution to AG° than does the enthalpy term.

18. Predict the two most likely mechanisms for the reaction of 2-iodohexane with sodium ethoxide.
(A)S_N2 and S_N1
(B) E1 and E2
(C) S_N2 and E2
(D) E1 and S_N1
(E) E2 and S_N1

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