Question

Question 21 3.3 The reaction of tert-butyl bromide, (CH3),CBr, with methanol proceeds by an E1 mechanism. What is the effect of doubling the concentration of methanol? The rate remains the same The rate decreases by a factor of 2 The rate increases by a factor of 2 The rate increases by a factor of 4

Answer 1

Answers:

Question 21- The rate remains the same

This is because in E1 mechanism, the rate determining step involves the formation of electrophile from tert-butyl bromide as it is the slowest step of the whole reaction and the second step of reaction with methanol is faster one. As the overall rate of a reaction depends upon rate determining step, doubling the concentration of methanol has no effect on the rate of the reaction.

Question 22- cis-4-ethylcyclohexanol

As both the hydrogen atoms of the carbon atoms attached with OH and methyl group are on the same side of the axis, the compound is in cis form.