5. Which Fischer projections represent pairs of enantiomers? CH3 CH3 H 2 C2H5 CH3- + -Вг Br- + -CH3 CH3 +1 -Br CH3- -Br C2H5 C2H5 C2H5 H 1 N a) I and II b) II and III c) II and IV d) III and IV e) I and IV

Choose the Fischer projection that is the enantiomer of the structure shown. CH3 H H3C -Br CI- -H CH3 A H H3C- -Br H₂C -CI H B CI- Br H H CH3 H CI- CH3 -Br -H CH3 C Br H- CH3 -H -CH3 CI D H CI Br -CH3 -H CH3 E

Which of the following pairs of stereoisomers are related as enantiomers? a) A & B; C&D b) A& C; B&D c) A&D; B&C d) C&D; B&C

Draw the enantiomer and a diastereomer for this compound.

6) Which of the following is the enantiomer of the compound shown below? CH2CI A) CIH2C .CH3 HA CH2CI H, H3C C) ČH,CI D) CIHCm CH3 E) ÇH3 Huum CIH;C B)

7) These two structures, shown as Fischer projections are:

2. Fill in the squares with the correct configuration (R or S) for the following compounds and determine whether they are Enantiomers, Diastereomers, the Same Compound or Constitutional Isomers. Br H₂N NH₂ "Br A) Enantiomers B) Diastereomers C) Same Compour D) Constitutional Isomers

Which two Fischer projections represent a pair of enantiomers? CH HO- -H HCI C2H5 ΙΟ I a. II & III O b. I & IV c. III & IV Od. 1 & Il CH3 H-CI C2H5 CH3 Cl-H HO-H HO -H HOH CIH C2H5 CH3 C2H5 II III IV

Each blank only has correct answer. Answer choice for blank 1: the same blank enantiomers diastereomers Answer choice for blank 2: the same blank enantiomers diastereomers Answer choice for blank 3: the same blank enantiomers diastereomers Answer choice for blank 4: the same blank enantiomers diastereomers

5. Which of the following statements is not true? A) A molecule that is superimposable on its mirror image is said to achiral. B) A molecule that is not superimposable on its mirror image is said to be chiral. C) A molecule that is superimposable on its mirror image is said to be chiral. D) A carbon atom bonded to four different groups is a stereogenic center.