Question 1

Rank the following substrates from most to least reactive in an S_N2 reaction.

Accepted Answer

The S_N2 reaction involves a nucleophilic substitution on a benzyl halide. Benzyl halides are reactive due to the resonance stabilization provided by the phenyl ring. Therefore, the substrate with the most resonance stabilization (i.e. the most electron-rich), which is A, will be the least reactive. Conversely, the substrate with the least resonance stabilization (i.e. the least electron-rich), which is D, will be the most reactive. The order of reactivity is therefore D>C>B>A, which matches option C.

Question 2

Rank the following substrates from most to least reactive in an S_N2 reaction.

Accepted Answer

The answer of Rank the following substrates from most to...

Question 3

What is the product of the following reaction?

Accepted Answer

The answer of What is the product of the following...

Question 4

Provide an arrow-pushing mechanism for the following (intramolecular)reaction.

Accepted Answer

The answer of Provide an arrow-pushing mechanism for the following...

Question 5

What is the product of the following reaction?

Accepted Answer

The answer of What is the product of the following...

Question 6

Provide the S_N2 product of the following reaction.

Accepted Answer

The answer of Provide the S_N2 product of the following...

Question 7

Rank the following substrates from most to least reactive in an S_N2 reaction.

Accepted Answer

The answer of Rank the following substrates from most to...

Question 8

Given the following rate law,what will happen to the rate if the concentration of MeI is doubled? Rate = k[Me₃N][MeI]

Accepted Answer

According to the rate law, the rate is directly proportional to the concentration of MeI. Thus, if the concentration of MeI is doubled, the rate will also double.

Question 9

Write the rate law for the following S_N2 reaction.

Accepted Answer

The answer of Write the rate law for the following...

Question 10

Draw a reaction diagram for the following reaction.

Accepted Answer

The answer of Draw a reaction diagram for the following...

Question 11

Which of the following is a mechanism for an S_N2 reaction?

Accepted Answer

Show arrows more carefully in B,C,D

Question 12

From the given starting material,how could you stereospecifically form the given product?

Accepted Answer

The answer of From the given starting material,how could you...

Question 13

Provide a mechanism for this reaction.

Accepted Answer

The answer of Provide a mechanism for this reaction. ...

Question 14

When drawing an arrow-pushing mechanism,the head of the arrow goes where?

Accepted Answer

The head of the arrow in a mechanism points to the location where the electrons are being moved. In other words, it indicates the destination of the electrons. Therefore, the best choice is D, "At the location to which the electrons are being moved."

Question 15

Which of the following is the rate law for the following S_N2 reaction?

Accepted Answer

The rate law should include the concentrations of the reactants that affect the reaction rate. From the reaction, we can see that both NaCN and 1-bromopropane are involved. Therefore, the rate law should include both of these reactants. Additionally, the reaction is not a first-order reaction with respect to either reactant, so options A and B can be eliminated. Option D is not a valid rate law as it includes an unknown term (²) which is not one of the reactants. Thus, the best choice is C.

Question 16

Rank the following substrates from most to least reactive in an S_N2 reaction.

Accepted Answer

The answer of Rank the following substrates from most to...

Question 17

Provide the rate law for the following reaction.

Accepted Answer

The answer of Provide the rate law for the following...

Question 18

Which of the following is the rate law for the following reaction?

Accepted Answer

The answer of Which of the following is the rate...

Question 19

Given the following rate law,what will happen to the rate if the concentration of both reactants is doubled? Rate = k[Me₃N][MeI]

Accepted Answer

Since the rate law is dependent on the concentration of both reactants, doubling the concentration of both reactants would result in a 2 x 2 = 4-fold increase in the rate. Therefore, the correct answer is D.

Question 20

Given the following rate law,what will happen to the rate if the concentration of MeI is doubled and the concentration of Me₃N is halved? Rate = k[Me₃N][MeI]

Accepted Answer

The rate law is directly proportional to the concentration of both reactants. Doubling [MeI] and halving [Me3N] will cancel each other out, leaving the rate unchanged.

Quiz 7: Substitution Reactions

Rank the following substrates from most to least reactive in an SN2 reaction.

Rank the following substrates from most to least reactive in an SN2 reaction.

What is the product of the following reaction?

Provide an arrow-pushing mechanism for the following (intramolecular)reaction.

What is the product of the following reaction?

Provide the SN2 product of the following reaction.

Rank the following substrates from most to least reactive in an SN2 reaction.

Given the following rate law,what will happen to the rate if the concentration of MeI is doubled? Rate = k[Me3N][MeI]

Write the rate law for the following SN2 reaction.

Draw a reaction diagram for the following reaction.

Which of the following is a mechanism for an SN2 reaction?

From the given starting material,how could you stereospecifically form the given product?

Provide a mechanism for this reaction.

When drawing an arrow-pushing mechanism,the head of the arrow goes where?

Which of the following is the rate law for the following SN2 reaction?

Rank the following substrates from most to least reactive in an SN2 reaction.

Provide the rate law for the following reaction.

Which of the following is the rate law for the following reaction?

Given the following rate law,what will happen to the rate if the concentration of both reactants is doubled? Rate = k[Me3N][MeI]

Given the following rate law,what will happen to the rate if the concentration of MeI is doubled and the concentration of Me3N is halved? Rate = k[Me3N][MeI]

Rank the following substrates from most to least reactive in an S_N2 reaction.

Rank the following substrates from most to least reactive in an S_N2 reaction.

Provide the S_N2 product of the following reaction.

Rank the following substrates from most to least reactive in an S_N2 reaction.

Given the following rate law,what will happen to the rate if the concentration of MeI is doubled? Rate = k[Me₃N][MeI]

Write the rate law for the following S_N2 reaction.

Which of the following is a mechanism for an S_N2 reaction?

Which of the following is the rate law for the following S_N2 reaction?

Rank the following substrates from most to least reactive in an S_N2 reaction.

Given the following rate law,what will happen to the rate if the concentration of both reactants is doubled? Rate = k[Me₃N][MeI]

Given the following rate law,what will happen to the rate if the concentration of MeI is doubled and the concentration of Me₃N is halved? Rate = k[Me₃N][MeI]