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Organic Chemistry - Alkanes

Essay by   •  July 30, 2018  •  Coursework  •  455 Words (2 Pages)  •  865 Views

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Alexandra Cook

Unit 1: Organic Chemistry

Module 2 Assignment: Alkanes

Complete the assignment and submit the final document to the dropbox before you upload your file, ensure that it is in PDF format and that your name appears on the first page of your document.

  1. Which of the following compounds is a structural isomer of pentane?

a.[pic 1]

b. [pic 2]

c. [pic 3]

d. [pic 4]

e. [pic 5]

  1. Name the following compounds:

a. [pic 6]

2,3,4,5-tetramethylheptane

b. [pic 7]

7-ethyl-3,4,5-trimethyldecane

c.[pic 8]

3-methylbutane

d. [pic 9]

t-butyl chloride

 

e. [pic 10]

Cyclooctane

  1. Draw the structure of the following compounds:
  1. 3,4-diethyl-2,4-dimethylhexane

[pic 11]

  1. 3,5,5-triethyl-3,6,7,7-tetramethyldecane 

[pic 12]

  1. 2,3,4-trimethylpentane

[pic 13]

  1. n-heptyl fluoride

[pic 14]

  1. Natural gas is mainly made up of which alkane?

Natural gas is a hydrocarbon gas mixture mainly made up of methane. Although, can be seen including varying amounts of other higher alkanes. As well as a small percentage of carbon dioxide, and nitrogen. 

  1. Give the structural isomers for the compound C6H14.

There are 5 structural isomers of hexane. They are, n-hexane; 2-methylpentane; 3-methylpentane; 2,2-dimethylbutane; 2,3-dimethylbutane.

  1. a. Research and list the boiling point of the first 10 alkanes.  

[pic 15]

Here is the picture I found of the boiling points of the first 10 alkanes.

b. Explain the trend you observe in their boiling points.

The first 10 alkanes seem to have low boiling points. The trend I have noticed in the boiling points of the alkanes, observed on the chart above was the boiling point increasing regularly as the number of carbon atoms was increased.

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