Which alkyl bromide will react the fastest in an E2 reaction? A B C What is the
ID: 545373 • Letter: W
Question
Which alkyl bromide will react the fastest in an E2 reaction?
A
B
C
What is the IPUAC name of this compound?
Z-3-chloro-2-pentene
E-3-chloro-2-pentene
Z-3-chloro-3-pentene
E-3-chloro-3-pentene
The reaction of t-butyl bromide, (CH3)3CBr, with methoxide, -OCH3, in methanol yields 2-methylpropene in an E2 reaction. What is the effect on the rate of reaction of doubling the concentration of t-butyl bromide?
The rate is doubled.
The rate is halved.
The rate increases by four times.
The rate stays the same.
A
B
C
CH3 CH2Br Br CH3 A) B) C)Explanation / Answer
Ans 1 C)
E2 reactions are bimolecular elimination reactions which occurs in one step. The unimolecular two step reactions are called as E1 reactions.
The tertiary halides are most reactive in the E2 mechanism than primary or secondary.
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