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.
9. Which of the following is not an isomer of hexane? 1. 2,2-dimethylbutane 2. 2,2-dimethylpentane 3....
5. Which are constitutional isomers? A. Hexane and 3-methylpentane B. Hexane and 2,3-dimethylpentane C. Hexane and 2,3-dimethylbutane D. Hexane and cyclohexane
Order the following compounds by boiling point-lowest boiling point first (1 point) 1) Hexane 2) 2-methylpentane 3) 2,2-dimethylbutane 4) 3-bromopentane 5) 2,3-dimethylbutane 6) 1-hexanol Order 7. Justify your order for the previous question (1 point)
9. Which of the following pairs of structures represent a pair of enantiomers HyC.. HCN Had BCH H₂ CH₂ C OH H, CH.CH соон H ! CHE соон H₂C....! н HNH 10. What is the relationship of the following two compounds? COOH HCI HCI and HC COOH ні он OH a. Constitutional isomers b. Diastereomers c. Identical d. Enantiomers 11. Name the following hydrocarbon. 295 a. 2,3-dimethylbutane b. hexane c. 1,2-dimethylbutane d. 2-methylpentane
b. Which of the following alkanes has the highest bolling point? 2,3-dimethylbutane: 2-methylpentane; 3-methylpentane; hexane c. Which of the following compounds can adopt a chair conformation in which there are no axial methyl groups? 1,1-dimethylcyclohexane; cis-1,2-dimethylcyclohexane; trans-1,2-dimethylcyclohexane; trans-1,3-di methylcyclohexane d. Which of the following compounds can adopt a chair conformation which there are no axial methyl groups? cis-1,2-dimethylcyclohexane; cis-1,3-dimethylcyclohexane; trans-1,3-dimethylcyclohexane; cis-1.4-dimethylcyclohexane cis-1,2-dimethvcyclohexane (Enter the numerical value only, without any units)? e. What is the approximate di hedral angle between the...
7. (9 pts) (Are the following optically active or meso? meso HyCHC OH HO opticaly actve active opti call active 8. (3 pts) How many stereoisomers are there of 2,3-dibromobutane? 4 sleeoisamvers (8 pts) Circle the letter of the statements that are true. a. Racemic mixtures are optically active Enantiomers have specific rotations that are equal, but have opposite signs 9. o adtc) Achiral molecules are optically inactive d Meso compounds contain equal amounts of enantiomers 4pts) Complete the Fischer...
8. Draw 3 of the following compounds: a. Tribromomethane b. 2,2-dicyclopropyl-3,3-dimethylbutane c. Di-(2,3-hydroxymethyl)-1,4-decandiol d. cis-2-propoxy-1-cyclodecanol 9. Draw the Newman projection for the following compounds: a. 13-dibromo-2,4-dichloropentane C,-C2 b. -fluoro-3-methoxy-4-methylethylheptan-2-ol C2-C
HELP What is the common UPAC name for the following compound? 1 нс b) 1-methyl-3-cyclohexene d) 1-methyl-4-cyclohexene a) 5 methylcyclohexene c 4 methylcyclohexene Methylcyclohexene e) Which of the following is capable of exhibiting cis-trans isomerism? a) 1-pentene 2. b) 1-butene c) 2- pentene d) Cyclohexene e) Ethene What is the relationship between the following compounds: 3. Н,с a) Conformational isomers b) Constitutional isomers c) Configurational isomer d) Structural isomers e) Positional isomers Which of the following is the most stable...
Lucy propere (d) isopentane and 2-methylbutane 3. Which one of the following hexanes has the lowest boiling point? (a) 3-methylpentane (b) 2-methylpentane (c) hexane (d) 2,2-dimethylbutane 4. A CH3 In the lowest energy conformation of the compound to the right, how many alkyl substituents are axial? (a) 0 (c) 2 (b) 1 (d) 3 (CH),CHWV CH.CH 5. Identify the correct IUPAC name for the structure shown below. (a) 1-tert-butyl-2-chloro-5-bromocyclooctane (b) 5-bromo-1-tert-butyl-2-chlorocyclooctane (c) 1-bromo-4-chloro-5-tert-butylcyclooctane (d) 1-bromo-4-tert-butyl-5-chlorocyclooctane (e) 1-tert-butyl-4-bromo-7-chlorocyclooctane 6. Which of...
1. Which of the following is an aldohexose? 2. Which of the following is a cetopentose? 3. Which of the following best describes the relationship between D-glucose and D-fructose? 4. Which of the following is (are) L-alfohexose(s)? 5. Which of the following aldohexose(s) is (are) dextrorotatory? 6. How many stereoisomers are possible for L-galactose? Draw or look for its structure. 7. Which of the following conpounds is a pair of enantiomers? 8. Draw the fisher projection for L-sedoheptulose and also...
26) Name the following compound. CH3 H2C=CH-CH2CHCH: A) 1,1-dimethyl-3-butane B) 4-methyl-1-pentene C) hexene D) 2-methyl-4-pentene E) 2-methylpentene 27) Name the following compound. CI A) 2,3,5-trichlorobenzene B) trichlorostyrene C) 1,3,4-trichlorobenzene D) 1,3,4-trichlorohexene E) 1,2,4-trichlorobenzene 28) Identify the formula for an alkene. A) CnH2n+4 B) CnH2n+2 C) CnH2n D) CnH2n-4 E) CnH2n-2 29) Name the following compound. A) 1,4-bromocyclohexene B) 1,4-dibromobenzene C) 3,6-dibromobenzene D) 2,5-dibromobenzene E) 2,5-dibromocyclohexene 30) Name the following compound. CECH CH,CH,CHCH A) 2-ethynebutane B) 3-methyl-1-pentyne C) 3-methyl-4-pentyne D) 3-ethyl-1-butyne...