02e

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Chem 212 Quiz 2e p.1

NAME__________________________________

Functional Groups and Alkanes (20 pts)

1.

(6pts) Draw structures for two different aldehydes with the formula C

8

H

16

O. You may draw a line-bond structure; if you draw each carbon as “C” you must draw each hydrogen.

[2(8) + 2 - 16]/2 = 1, and an aldehyde has a C=O which must be the only unsaturation in the structure. There are many possible answers.

O

O

2.

(4 pts) Underneath the structure, write the name of each of the following:

CH

3

Cl

H

3

C

H

3

C

H

3

C

CH

3 trans -1-chloro-2-isopropylcyclobutane

H

3

C

8-ethyl-3-methyldodecane

3.

(4 pts) Describe the relationship between each of the following pairs of structures as one of the following: identical, cis-trans isomers, constitutional isomers, or different compounds.

CH

3

CH

3

CH

3 and

Constitutional

CH

3 H

3

C CH

3

H

3

C CH

3 and

Different compounds

CH

3

H

3

C CH

3

(i.e. not related)

\

4.

(6 pts) Write line-angle formulas (i.e. structures similar to those shown for problems 1 & 2 above) for the following alkanes and cycloalkanes. You may need to add wedges and/or dashes to the structures.

Your answer must be a line angle formula to receive credit!

a.

cis -1,4-Dimethylcyclohexane

H

3

C

CH

3 b.

2,2,3,3-Tetramethyldecane c.

3-t-Butyl-6,6-diethylnonane

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