Part II: Stereochemistry 11. How can you say that an organic molecule is chiral? 12. Why is it important to learn chirality of organic compounds? 13. Draw chiral molecules that meet the following descriptions: a. A chloroalkane, C5H11C1 b. An alcohol, C6H140 2 Page 14. Cholic acid, the major steroid found in bile, was found to have a rotation of +2.22 when a 3.00 g sample was dissolved in 5.00 mL of alcohol in a sample tube with a 1.00 cm pathlength. Calculate [a], for cholic acid. 15. Assign R or S configuration to the chirality centers in the following molecules: (a) H (b) OCH2CH3 (c) OH 1 1 1 NCC-OH HC-CH3 H3C-7C-CH2OH CH3 CI H