Equation:

 C8H18

+

O2

right arrow

CO2

+

H2O

Balancing:

 2 C8H18

+

25 O2

right arrow

16 CO2

+

18 H2O

Stoichiometry (n or V):

2

:

25

:

16

:

18

Before reaction:

 0.025 L

 

0.600 L

 

0

 

0

 

  • V octane required to react with 0.600 L oxygen = {2/25}{0.600 L} = 0.048 L, more than available, so octane limits;

  • O2 = 0.600 - (25/2)(0.025) = 0.600-0.3125 = 0.288 L,

  • From V octane can then find V CO2 = (16/2)(0.025) = 0.200 L and V H2O = (18/2)(0.025) = 0.225 L

 

After reaction:

0 L

 

0.288 L

 

0.200 L

 

0.225 L

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Kinetic Molecular Theory of Gases

Kinetic-molecular theory is a simple model to explain properties of gases. There are four basic postulates:

animation of translational motion in gasses

public domain image via Wikipedia Creative Commons

 

 

 

© R A Paselk

Last modified 2 March 2015