HELP WITH ORGANIC QUESTIONS! 1. Which peak on the energy diagram (lab manual) fo

Question

HELP WITH ORGANIC QUESTIONS!

1. Which peak on the energy diagram (lab manual) for this experiment represents the transition state in which water has reacted with the carbocation?

A. the first peak

B. the third peak

C. This is not presented on the energy diagram

D. the second peak

2. Which statement about the rate of an SN1 reaction is incorrect?

A. The solvent used can affect the rate of reaction.

B. The strength of the nucleophile has no effect on the rate of reaction.

C. The concentration of reactants have no effect on the rate of reaction.

D. The temperature can affect the rate of reaction.

3. For a first order reaction, a plot of ln[A]t versus time gives a straight line with a slope of

A. kt

B. -k

C. 1/[A]

D. nk^2

4. If a small amount of t-butyl chloride catches fire in a beaker. How do you handle this?

A. Cover the beaker with a watch glass to smother the flame and inform your TA.

B. Pick up the beaker and pour the burning liquid in the sink.

C. Pour water in it and inform your TA.

D. Evacuate the laboratory.

5. Cyclobutane (C4H8) decomposes in a first-order reaction, with a rate constant of 87 s-1, to form two molecules of ethylene (C2H4). If the initial concentration is 4 M, what is the concentration after 0.020 seconds? Please round your answer to one significant figure.

6. Cyclopropane thermally decomposes by a first order reaction to form propene. Please round your answers to two significant figures.

(a) If the rate constant is 8.0 s-1, what is the half-life of the reaction? answer in s

(b) How long does it take for the concentration to reach 0.125 of its initial value? answer in s

Explanation / Answer

1.D

2.B

3.B

4.B

5.

6.a) 0.0866

b)0.036

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