Just give correct answer. Don\'t need explain. thank ! 16. In a series of n-alka
ID: 698345 • Letter: J
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Just give correct answer. Don't need explain. thank !
16. In a series of n-alkanes, ranking in order of boi boiling points is determined by differences in (A) stability (C) refractive index +12, then what is [ol for (B) surface area (D) hydrogen bonding CI 11. If Molecule I has la) tolecule 27 H COoH HO COOH HOOC OH Molecule 2 17. What is the major NaOEt/EtOH Molecule 1 product of this reaction? (A) -12(B) 0 (C) +12 (D) impossible to tell from the information provided CH3 12. What is the IUPAC name for this compound? Et (B) 3-ethyl-1-octyne (D) 4-acetylenyloctane CH3 (A) 3-ethynyloctane (C) 3-pentyl-1-octyne which statements about rneso compounds arefalse? CH 13. I. Meso compounds contain an internal mirror plane 18. What is the IUPAC name for this II. Meso compounds are chiral A meso compound must contain at least two chiral centersS. III. molecule? OH Meso compounds are non-superimposable mirror images of each other. IV. (A) 2-bromo-4,5-dimethyl-4-hexanol (B) 3-bromo-1-isopropyl-1-methyl-1-butanol (C) 5-bromo-2-isopropyl-2-pentanol (D) 5-bromo-2,3-dimethyl-3-hexanol (A) Iand 1I1 (C) II and III (B) I and IV (D) II and IV 14. What is the effect on the rate of this reaction if the concentration of CHBr is doubled? 19. Consider the hydrogen H3C-Br HO atoms that are labeled in the molecule shown. H Which is the correct order of acidity for the labeled hydrogens (from most acidic to least acidic)? H3C-OH Br (A) There is no change in the rate (B) The rate is quadrupled. (C) The rate is cut in half. (D) The rate is doubled. 15. What are the major (B) Hc> Ha>Ha> (C) He (D) H/H, > H,2H products of this reaction? 20. What is the relationship between these molecules? Br HO CH3 CI OH Cl (A) conformers (B) enantiomers (D) constitutional isomer OH Br (C) diastereomers IV (A) I and enantiomer (B) II and enantiomer (C)and enantiomer ( D) IV and enantiomerExplanation / Answer
11. Ans : A (enatiomers having opposite sign of rotation)
12. Ans : B
13. Ans : D.
14. Ans : D
15. Ans : C
16.Ans : B
17. Ans : A
18. Ans : D
19. Ans : B.
20. Ans : D
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