Ch. 7 Key - exercises with answers PDF

Preview

Summary

exercises with answers...

Description

Chapter 7 Alkenes: Structure and Reactivity By Dr. Xiangyang Lei I. Assignments (textbook) Chapter 7: 1-72 II. Calculate the degree(s) of unsaturation in the following formulas. (a) C3H4;

(b) C7H10Br2;

2

(c) C8H10ClNO;

2

(d) C13H10FNO

4

9

III. How many hydrogens does each of the following compounds have? 12 hydrogens 13 hydrogens 13 hydrogens

(a) C8H?O2, has two rings and one double bond (b) C7H?N, has two double bonds (c) C9H?NO, has one ring and three double bonds IV. Give IUPAC names of the following compounds. CH2

(1) 2,5-dimethyl-1-heptene or 2,5-dimethylhept-1-ene

CH CH2

CH CH

CH2

CH3

(2)

3-methyl-1,5-hexadiene or 3-methylhexa-1,5-diene

CH3

CH CH2

CH3 (3) 2,5-dimethyl-1,3-cyclopentadiene or 2,5-dimethylcyclopenta-1,3-diene

(4) 4-vinylcyclohexene CH3CH2

CH3 Br (5) 2-bromo-3-methyl-1,3-cyclohexadiene or 2-bromo-3-methylcyclohexa-1,3-diene

C CH3CH2 CH

(6)

CH2CH3 C H

Cl

(E)-5-chloro-4-ethyl-3-heptene or (E)-5-chloro-4-ethylhept-3-ene

Cl

CH3 (7) (3E,5Z)-6-chloro-3-methyl-1,3,5-octatriene or (3E,5Z)-6-chloro-3-methylocta-1,3,5-triene

(8) (2E,4E)-5-ethyl-4,8-dimethylnona-2,4,7-triene or (2E,4E)-5-ethyl-4,8-dimethyl-2,4,7-nonatriene 1

V. Draw structures corresponding to the following names. (1) (Z)-2-bromo-2-pentene

(2) (4E)-2,4-dimethyl-1,4-hexadiene

(3) (3E,5Z)-2,6-dimethyl-1,3,5,7-octatetraene

VI. Draw and name the six alkene isomers, C5H10, including E, Z isomers.

VII. Draw and name all five isomers of formula C3H5F.

2...