|Effect of Temperature on Keq|
|Changing the temperature favours one reaction over the
a shift in the Keq value is caused, as well as a change in
[participants]. A new equilibrium will be reached with it's own Keq
for the reaction at that temperature. At constant temperature, changing
the equilibrium concentration does not affect Keq because
rate constants are not affected by the concentration changes.
|When the concentration of one of the participants is
concentration of the others vary in such a way as to maintain a
value for the Keq.
|Relationship of Keq to the Extent of Reaction|
|The magnitude of Keq is a measure of the
extent to which
a given reaction has or will take place.
|A large value of Keq indicates that, at
is a high concentration of products and a relatively low concentration
|A small value of Keq indicates that at
concentration of reactants is still high compared with that of the
|A Keq value of 1 means that half of the
turned into products. Therefore if the Keq is 1 then there
be a 50.0% yield.
|If the Keq is about 1 x 1010 then
has gone almost to completion.
|If the Keq is about 1 x 10-10 it is
an incomplete reaction.
|1.0 x 10-10
1.0 x 1010
| | |
0.0001% 1% 50% 99.9% 99.999%