10.3 - Dynamic Equilibrium

• dynamic equilibrium

  when the forward and backward reactions happen at the same rate so concentration of products and reactants remains constant

  at a molecular level there's constant movement but at a microscopic level it looks like nothing is happening
• conditions for dynamic equilibrium

  reversible reaction

  closed system

  temperature, pressure and concentration affect position
• dynamic equilibrium in iodine in cyclohexane and potassium iodide

  all iodine molecules are in upper cyclohexane layer but as you shake it, iodine moves into aqueous layer - only forward reaction happening

  as iodine concentration in aqueous layer increases, backward reaction starts happening

  after some time backward and forward reaction happen at the same rate - there's still movement of iodine but no overall change in concentration