Consider the reaction sequence given below : Br OH + Br – ………… (A) rate = k[t-BuBr] OH– H2O OH– C2H5OH H2C CH3 CH3 +HOH + Br – ………… (B) rate = k[t-BuBr][OH–] Which of the following statements is true:

Question

Consider the reaction sequence given below : Br OH + Br – …………

(A) rate = k[t-BuBr] OH– H2O OH– C2H5OH H2C CH3 CH3 +HOH + Br – …………
(B) rate = k[t-BuBr][OH–] Which of the following statements is true: (1) Changing the concentration of base will have no effect on reaction (1) (2) Doubling the concentration of base will double the rate of both the reactions
(C) Changing the concentration of base will have no effect on reaction (2)
(D) OR will have no effect on reaction (2)

Prashant Kotian · Accepted Answer

Correct answer: A. First reaction is SN1 in which rate does not depend on conc. of nucleophile. Second reaction is E2 reaction in which rate depends on conc. of base.

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