Equilibrium in ChemistryA series of free High School Chemistry Video Lessons from Brightstorm.
Equilibrium Changes Equilibrium changes are caused by Le Chatlier’s Principle and depend upon the stress applied. Le Chatelier’s Principle predicts the direction of change. For changes in volume, it is important to note that volume and pressure are inversely related. The effect of a change in concentration would increase or decrease in molecular collisions and increase or decrease the rate of forward and reverse reactions accordingly. The result from the effect of a change in temperature can either be exothermic, in which energy is released or endothermic, in which energy is consumed.
Calculating Equilibrium Concentrations The general steps of calculating equilibrium concentrations are to first write out the expression of equilibrium constant, then impute the known concentration value of each element given, and finally solve for the unknown value. When dealing with equilibrium, it is important to remember that solids and liquids are not affected.
Solubility Equilibrium Solubility equilibrium is the equilibrium associated with dissolving solids in water to form aqueous solutions. At the point where no more solid can dissolve, the solution is saturated. The solubility product constant is an equilibrium constant used in solubility equilibrium.
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