4. Alkanes and Cycloalkanes

What is each compound's systematic name?

c.

The following names are all incorrect or incomplete, but they represent real structures. Draw each structure and name it correctly.

a. 2-ethylpentane

b. 3-isopropylhexane

Classify each hydrogen atom in the following compounds as primary (1°), secondary (2°), or tertiary (3°).

a. butane

b. isobutane

Label each hydrogen atom in the following compounds as primary (1°), secondary (2°), or tertiary (3°).

(a) CH₃CH₂CH(CH₃)₂

(b) (CH3)₃CCH₂CH₃

Draw the structures of octane and isooctane.

Give each substituent on the ten-carbon chain a common name and a parenthetical name

c.

d.

How many isomers have common names?

Draw a skeletal structure for an alkane that has

a. six carbons, all secondary.

b. eight carbons and only primary hydrogens.

c. seven carbons with two isopropyl groups.

Name the following alkanes using the common names for branched substituents.

(c)