Tuesday, 27 March 2012

chem blog post for test

Le Chateliers Principle

I think that last little project we did on the haber process helped a lot. It kind of brought it all back, starting the project I really forgot all the rules of le chateliers principle but now I'm feeling more comfortable with it.


Concentration

Increasing concentration on reactants shifts the equilibrium to the product side (right).

Increasing concentration on products shifts the equilibrium to the reactants side (left).


Opposite with decreasing.


Temperature

exothermic reaction: An increase in temperature shifts the equilibrium to the reactants side.

endothermic reaction: An increase in temperature shifts the equilibrium to the products side. 


Opposite with a decrease in temperature.


Pressure

When you increase the pressure the equilibrium shifts to the side has the least # of moles of gas.

When you decrease the pressure the equilibruim shifts to the side that has the most # of moles of gas.



Wednesday, 21 March 2012

√2 sin 5 x -1 = 0

√2 sin 5 x = 1

sin 5x = 1/√2

5x = 3π/4 +- 2πn     or      5x = π/4 +- 2πn

x = 3π/20 +- 2πn/5, n E Z        x= π/20 +- 2πn/5 , n E Z

Haber Process video for chemistry

video