Question

9. Which of the following is not an isomer of hexane? 1. 2,2-dimethylbutane 2. 2,2-dimethylpentane 3. 3-methylpentane 4. 2-methylpentane 5. 2,3-dimethylbutane 10. Ascorbic acid (vitamin C) is not a carboxylic acid, but rather has the structure shown below. How many stereoisomers of this compound are possible? НО. 0 ascorbic acid HO но OH a. 1 b. 3 c. 4 d. 6 II. Short Answer Questions. (70 pt total) 1. a. Identify the functional groups in the following molecule as circled. (5 pt) 0 "NH CHI HEN b. Identify the relationship between the following isomers of dichlorocyclobutane as stereoisomers or constitutional isomers. Circle your response. (5 pt) H Stereoisomer Constitutional isomer H CI Stereoisomer Constitutional isomer CI

Answer 1

9) Isomers are those polyatomic ions or molecules with same chemical formula but different chemical structures.

Option (2) is correct. 2,2-dimethylpentane is not an isomer of hexane.

Chemical structure of Hescane CH₂ - CH₂ - CH₂ - CH₂ - CH₂ - CH₂ Molecular formala CH A 14TM 2, 2 - demethyl butane - CH₂ - CH₂ rero 1 CH₃ -C CH₂ Molecular formula 14 (a) 2, 2-dimethyl pentane CH₃ CH₂ - CH₂ CH₂ CH₂ CH₂

Molemlar formula 3-methyl-pestane on Chr CH2 - CH - CH CH₂ - Molecular formula CG HIM (4) 2-methylpentance CH CH CH CH₂ CH₂ CH₂ Molecular formula Hea

(5) 2 3-dimethy) butane CH, CH CH CH CH₂ CH₃ Molecular formula - C,Hin : 2,2-dimethylpentane is not an Psomer of hexane.