Chemical Equilibrium. What is Chemical Equilibrium?. Reversible Reaction - a chemical reaction in which the products can react to re-form the reactants. Chemical Equilibrium
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-a chemical reaction in which the products can react to re-form the reactants.
How is it Written?
2HgO(s) 2Hg(l) + O2(g)
-ratio of the concentrations of the products to the concentrations of the reactants
K= [C]x [D]y
n,m,x,y are the coefficients and are raised to the power equal to the coefficient of the substance
The [ ] represent the concentrations of the substances
a. Increase(add) a reactant or product will shift away from the added reactant or product
b. Decrease ( remove) a reactant or product will shift toward the removed reactant or product
a. If the pressure is increased,it will shift towards the side with the smaller number of molecules
b. If the pressure is decreased, it will shift towards the side with the larger number of molecules.
N2(g) + 3H22NH3
What would happen if we increased the pressure?
What would happen if we decreased the pressure?
a. Increase ( add) temperature will cause a shift away from the added temperature
b. Decrease (removal) temperature will cause a shift toward the removed temperature
556 kJ + CaCO3(s) CaO(s) + CO2(g)
What would happen if we increased the temperature?
What would happen if we decreased the temperature?
BaSO4(s) Ba2+(aq) + SO42-(aq)
Ksp= [Ba2+] [SO42-]
Consider the dissociation of the salt CaF2.
CaF2(s) Ca2+(aq) + 2F-(aq)
At a temperature of 298 K, the concentration of Ca2+ ions is 2.2 x10-4 M, and Ksp for the salt is 1.46 x 10-10. What is the concentration of F- in the solution?