As mentioned before gasoline is
the formost used fuel in the United States and all over the world. The
United States alone consumes about 130 billion gallons of gasoline a
year. This is about one-fourth off all the oil produced in the world.
Yet the United States only produces about one-tenth of it. America as a
whole spends about $100 billion dollars a year to import oil. When
Gasoline is used in automobile engines, it produces pollution as a
by-product of its emissions. In the United States there are
approximately 200 million
cars, and these cars accout for about 80% of pollution in big cities,
and about 50% of the total air pollution in the U.S.. Pollution from
cars has gotten to be such a problem that about 1/4 of the U.S.'s
population or 62 million people live in areas that violate the federal
public health standards for clean air. So as you can see this is a big
problem in the United States.
So what exactly is gasoline? Gasoline is what
is know as an aliphatic hydrocarbon. This means that it consists of
nothing buy hydrogen and carbon chains. A molecule of gasoline has
between 7 and 11 carbons linked together in a chain. These chains range
from C7H16 to C11H24. A common drawing of a
gasoline molecule might
look like these:
H H H H H H H
| |
| | | |
|
H-C-C-C-C-C-C-C-H --->
Heptane