Transcript 280equilibriumK

THE EQUILIBRIUM CONSTANT
1. The equilibrium constant (K) defines the position of the equilibrium as follows:
• If the value of K is less than 1, there will be little product when equilibrium
is reached.
• If the value of K is greater then one there will be a large quantity of product
when equilibrium is reached.
• The larger the value of K, the more product will accumulate for that
reaction.
• Each reaction has a specific value of K.
• Only temperature can change K.
• K IS THE RATIO OF PRODUCTS TO REACTANTS. MORE PRODUCTS
CORRESPOND TO A LARGER K!.
K =
[products]
[reactants]
A + 2B = C + 3D
K =
[products]
=
[reactants]
[C] [D]3
[A] [B]2
N2 + 3H2 = 2NH3
K =
[products]
=
[reactants]
[NH3]2
[N2] [H2]3