The video below gives a brief explanation of equilibrium and how to calculate the equilibrium constant.
Practice
Equilibrium Simulation glencoe.mheducation.com/olcweb/cgi/pluginpop.cgi?it=swf::800::600::/sites/dl/free/0035715985/117354/Equil_Nav.swf::Equilibrium%20Simulation
PhET Simulation from Video phet.colorado.edu/en/simulation/legacy/reversible-reactions
Practice Calculating Equilibrium Constant www.sciencegeek.net/Activities/calcK.html
PhET Simulation from Video phet.colorado.edu/en/simulation/legacy/reversible-reactions
Practice Calculating Equilibrium Constant www.sciencegeek.net/Activities/calcK.html