15. Which of the following statements is true? A) The presence of a plane of symmetry makes a molecule chiral. B) An achiral molecule must have one or more stereogenic centers. C) All molecules that have stereogenic centers are chiral. D) Stereoisomers that are not superimposable on their mirror image are enantiomers. 16. Which of the following molecules are chiral? I. cis-1,3-Dibromocyclohexane II. 1-Bromo-1-methylcyclohexane III. trans-1-Bromo-3-methylcyclohexane IV. cis-1-Bromo-3-methylcyclohexane A) I, II B) II, II C) 1, iv D) III, IV

Organic Chemistry: A Guided Inquiry
2nd Edition
ISBN:9780618974122
Author:Andrei Straumanis
Publisher:Andrei Straumanis
Chapter6: Alkanes & Alkenes
Section: Chapter Questions
Problem 21E
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answer 15 and 16

14. Which of the following molecules has a plane of symmetry?
CHBRCIF
CH2BrC1
CH;CHCIBI
CH;CH2CHB1F
I
II
III
IV
A) I B) II С) Ш D) IV
15. Which of the following statements is true?
A) The presence of a plane of symmetry makes a molecule chiral.
B) An achiral molecule must have one or more stereogenic centers.
C) All molecules that have stereogenic centers are chiral.
D) Stereoisomers that are not superimposable on their mirror image are enantiomers.
16. Which of the following molecules are chiral?
I. cis-1,3-Dibromocyclohexane
II. 1-Bromo-1-methylcyclohexane
III. trans-1-Bromo-3-methylcyclohexane
IV. cis-1-Bromo-3-methylcyclohexane
А) I, II В) П, П С) 1, IV D) Ш, IV
17. Which of the following molecules are chiral?
I. 2-Chlorobutane
II. 3-Bromopentane
III. 1-Bromo-2-methylpropene
IV. 2-Bromo-3-methylbutane
А) І, II В) І, IV с) П, ш D) Ш, IV
Transcribed Image Text:14. Which of the following molecules has a plane of symmetry? CHBRCIF CH2BrC1 CH;CHCIBI CH;CH2CHB1F I II III IV A) I B) II С) Ш D) IV 15. Which of the following statements is true? A) The presence of a plane of symmetry makes a molecule chiral. B) An achiral molecule must have one or more stereogenic centers. C) All molecules that have stereogenic centers are chiral. D) Stereoisomers that are not superimposable on their mirror image are enantiomers. 16. Which of the following molecules are chiral? I. cis-1,3-Dibromocyclohexane II. 1-Bromo-1-methylcyclohexane III. trans-1-Bromo-3-methylcyclohexane IV. cis-1-Bromo-3-methylcyclohexane А) I, II В) П, П С) 1, IV D) Ш, IV 17. Which of the following molecules are chiral? I. 2-Chlorobutane II. 3-Bromopentane III. 1-Bromo-2-methylpropene IV. 2-Bromo-3-methylbutane А) І, II В) І, IV с) П, ш D) Ш, IV
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