CHEMICAL EQUILIBRIUM 

      Equilibrium is the next topic in physical chemistry and consists

      of both chemical and ionic equilibrium. Questions in this 

      chapter are generally easy in iit jee but most students find

      ionic equilibrium challenging. I hope to cover all models of 

      problems on both these chapters.

      Chemical Equilibrium:

      

       Le Chatelier 's principle :

       1. Increase in concentration of reactants moves the reaction

           forward. ( not for solids)
     

      2. Increase in pressure moves in direction of lesser no of moles

           of gas.

  

      3. Addition of inert gas at constant volume - No change.

      4. Addition of inert gas at constant pressure moves the reaction

          in direction of greater number of  moles.

      5. In the ice water equilibrium, melting point decreases with

          increase in pressure.

    

      6. With increase in temperature , equilibrium constant of an

          endothermic reaction increases. The opposite is true for

          an exothermic reaction.

      NOTE:  Solubility of NaOH increases with temperature

                    although dissolution is an exothermic process.

                                  

                                    THANK YOU