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Chemistry 222 Chapter 4 Problems with Answers

Chemistry 222 Chapter 4 Problems with Answers - Chemistry...

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Chemistry 222 Problems assigned from the text Chapter 4: 10, 12, 13 (a-d, f), 15, 18, 19, 44 (b-e) and 46 10. The compound, 1,4-dichlorobenzene ( p -dichlorobenzene) has a rigid geometry that does not allow free rotation. Yet, no cis-trans isomers exist of this structure. Explain why it does not show cis- trans isomerism. In a benzene ring, all of the C atoms are sp 2 hybridized, which gives them trigonal planar geometry. Thus, the Cl atoms attached at positions 1 and 4 are both in the plane of the ring. They cannot point above and below the ring, which is required for them to exhibit cis-trans isomerism. 12. Name these compounds. NO 2 Cl CH 3 Br a. b. c. C 6 H 5 CH 2 CH 2 CH 2 Cl d. C 6 H 5 CCH 2 CH 3 e. f. g. h. NH 2 NO 2 OH C 6 H 5 C 6 H 5 H H C 6 H 5 CH 3 Cl Cl Br CH 3 p -chloronitrobenzene o -bromotoluene 1-chloro-3-phenylpropane 2-bromo-2-phenylbutane o -nitroaniline o -phenylphenol 2,4-dichlorotoluene trans -1,2-diphenylethene
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13. Draw structural formulas for these compounds.
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Chemistry 222 Chapter 4 Problems with Answers - Chemistry...

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