The following mechanism has been proposed for the conversion of tert- butyl brom

Question

The following mechanism has been proposed for the conversion of tert-butyl bromide to tert-butyl alcohol in aqueous solution:

(1) What is the equation for the overall reaction? Use the smallest integer coefficients possible. If a box is not needed, leave it blank.

(2) Which species acts as a catalyst? Enter formula. If none, leave box blank:

(3) Which species acts as a reaction intermediate? Enter formula. If none, leave box blank:

(4) Complete the rate law for the overall reaction that is consistent with this mechanism.

(Use the form k[A]m[B]n... , where '1' is understood (so don't write it) for m, n etc.)

Rate =

Explanation / Answer

tep 1 slow:   (CH3)3CBr --------> (CH3)3C+ + Br-

step 2 fast:   (CH3)3C+ + OH---------------> (CH3)3COH

                  -----------------------------------------------------------------------

1.                     (CH3)3CBr + OH- ----------------> (CH3)3COH overall reaction

2. none

3. intermediate (CH3)3C+

rate of reaction depends upon the slow step. it is rate determining step.

4. Rate = K[ (CH3)3CBr]^1

SN^1

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