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posted by  Crusoe on 5/16/2008 5:31:06 AM  |  status: Live  

chemical equilibrium

Course Textbook Chapter Problem
General Chemistry module che102p 5 1
Question Details:
For the following reaction;
What will happn to a reaction mixture at equlibrium if;
the temperature is increased?
"THE UNIVERSE IS EXPANDING,WHAT ABOUT YOU?"

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posted by Saito on 5/16/2008 6:07:11 AM  |  status: Live
Asker's Rating: Helpful   
Crusoe's comment:
"thankx"
Response Details:
Le Chatelier's principle states that when a system in chemical equilibrium is disturbed by a change of temperature, pressure, or a concentration, the system shifts in equilibrium composition in a way that tends to counteract this change of variable.

So if you increase the temperature, the position of equilibrium will move in such a way as to reduce the temperature again. It will do that by favouring the reaction which absorbs heat.

As the forward reaction is an endothermic reaction (you can tell its endothermic since the ΔH is positive) it will absorb heat from the system.

With this you should be able to then work out which direction the equilibrium will move when the temperature is increased.
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