Question

the answers i circled are incorrect. can you give me the correct answers and explain why?

postural de Pero ss and so Lalash, an walach asymmetric carbon as Ror S. (3) label the How many asymmetric carbon atoms are present in the following compound A) B) 1 D) 3 E) 4 2) Which of the statements below correctly describes an achiral molecule? The molecule has a nonsuperimposable mirror image. B) The molecule exhibits optical activity when it interacts with plane-polarized light. C) The molecule has an enantiomer. D) The molecule might be a meso form. E) None of the above 3) Predict the specific rotation of the compound shown. into HC A It is impossible to predict; it must be determined experimentally. BYBecause both asymmetric centers are R, the compound is dextrorotatory. C) Because both asymmetric centers are S, the compound is levorotatory. D) Zero, the compound is achiral. E) Because this compound represents a racemic mixture, the compound is dextrorotatory 4) Which of the following terms correctly describe(s) the structural relationship between els 1.3. dimethylcyclopentane and trans-1,3-dimethylcyclopentane? (A) enantiomers B) diastereomers C) geometric isomers D) both A and C E) both B and C 5) What term describes the structural relationship between (2.3R.48)-2.3.4-trichloroheptane and (2R 3R 4R) 2,3,4-trichloroheptane? A) not isomers BDconstitutional isomers C) enantiomers D) diastereomers E) conformers

Answer 1

Solution I - chical cordon (Aryansane Carbon) Not - Asymmetric carbon Asymmetric carbon attached to four means different chirl Carbon aturn that is types of atoms or groups of atoms, one asymmetric contre to present. Hence And B only (4).