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Equilibrium
1. Equilibrium: LeChatelier’s
Principle, Ksp, and Keq
Until this point most of our reactions
have gone to completion forming
water, gas, or a precipitate. In
equilibrium reactions, however, there
is product and reactant at the same
time.
NO2
4. Le Chatelier’s Principle:
If you disturb a reaction at
equilibrium, the reaction returns
to equilibrium in such a direction
to partially undo the disturbance.
6. Ksp: Solubility Product
Constant
Ksp has major importance in slightly
soluble compounds such as uric acid and
the cause of gout in humans, and in a
natural contaminant of drinking water
FeS.
7. Calculation of Ksp...
Ksp
=
BaSO4
(s)
<->
Ba+2 (aq)
+ SO4-2 (aq)
Ksp
=
[Ba+2] [SO4-2]
Ksp for BaSO4
1.1x 10-10 M
=
Ba+2 ion
= Sq. Rt. 1.1 x 10-10
=
1.05 x 10-5
SO4-2 ion
=
same as above