Monday 23 May 2011

7.2.1 I can deduce the equilibrium constant Kc for homogenous reactions


What can change the value of the equilibrium constant? 

The only thing that changes the value of the equilibrium constant for a reaction is the temperature.

The reaction must be at ________ for the value of the equilibrium constant to be calculated. 

Equilibrium - when the concentrations used in the equation are the equilibrium concentrations for all reactants and products.

Define the term homogeneous 

A mixture which has uniform composition and properties throughout.

The Units Of Kc


aA + bB <----------> cC + dD

If (c+d) - (a+b) = 0     then there are no units

If (c+d) - (a+b) = 1     then Kc -----> mol dm^-3

If (c+d) - (a+b) = -1     then Kc -----> mol^-1 dm^3

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