Equilirium

[EvoN1020v]

Currently I am learning Equilirium, and when I get to the Dymanic Equilirium or rather the LeChatelier's Principle, I became confused. Well, not exactly confused, but don't fully understand the concept. I understand that whenever a system at equilibrium is subjected to a stress, then the equilibrium will shift in a direction so as to relieve that stress. And the stresses may be a change in temperature, concentration and/or pressure(volume).

 

When either one of those stresses occurred I am having a difficulty to decide which direction the equilibrium will move. Right or Left? (Or even no change).

 

Use this example: 2NO(g) + O2(g) <===> 2NO2(g) + energy

 

(a) What happens if the temperature decreased?

(b) the concentration of NO(g) is descreased?

© the concentration of NO2(g) is increased?

(d) the volume of the system is decreased?

 

Any helpful hints or concepts would be accepriated.

[RyanJ]

this website explains it well. Read there and see if it helps you at all

 

Cheers,

 

Ryan Jones

[EvoN1020v]

Yesterday I had a Chemistry test and there were several questions on LeChatelier's Principle, and I got all of the answers correct! *pats on my back* but overall, I didn't do too well on the test.