35 Which is most reactive in an SN1 reaction? A. CHI فكرة B. -I C. ✓ E. +

should the student use if the above enzymatic process works at 65% efficies recovery yield is 80%? a. 180 g b. 119 g c. 282 g 75. Draw structure for (S,E)-4,5-dimethyl-4-hepten-3-ol: 15

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Select the member of each of the pairs below that shows the greatest rate of SN2 reaction with KI. or II or .CI IV Select one: a. Il and IV b. I and IV O c. I and III d. Il and III

17. Which of the following is a mechanism for an SN2 reaction? III. نعت a. I b. II c. III d. IV e. Both I & II LAM Br CN O + Br IV - Br + Br

1c. What is the nucleophile in the following reaction? .Br CH;CO0 Na LO OCCH3 NaBr ld. What is the electrophile in the following reaction? Br CH;COO Na L0OCCH3 NaBr +

5. w mexico What is the likely mechanism of this reaction? ew mexico Br A. E1cb B. E1 C. E2 D. None of the choices are correct. NaNH, DMF 6. I can answer question #5 because I know that: A. The solvent is polar protic, so a cation is easily formed B. The base is ionic, and so is a strong base C. The product follows Zaitsev's Rule D. The stability of the conjugate base allows for easy deprotonation as a first step

step(s). The SN2 reaction of chloroethane with NaC=CH has 1

21) Which of the following is an energy diagram for a three-step reaction? reaction coordinate reaction coordinate reaction coordinate B. D. reaction coordinate С. A.

Below is the free energy diagram for the substitution reaction of 2-chlorobutane with hydroxide ion: Reaction coardinate Draw the structures, which correspond to A and C in the free-energy diagram above for the reaction of 2-chlorobutane with hydroxide ion. a. b. Label the free energy of activation (AG#) and free energy change AG") on the diagram above. c. Is the reaction exergonic or endergonic (circle one)? page 4 of 17 Free energy