Reversible reactions

• Reversible reaction


  A reaction where the products can react to reform the original reactants
• Equilibrium


  The point where the forward and reverse reactions take place at exactly the same rate
• Reversible reaction


  1. Forward reaction

  2. Reverse reaction
• Changing conditions


  Can change the direction of a reversible reaction
• Reversible reactions


  • Each one is different, some move forward when cooled
• Heating hydrated copper sulfate

  Reaction is endothermic, forms anhydrous copper sulfate and water
• Adding water to anhydrous copper sulfate

  Reaction is exothermic, reforms hydrated copper sulfate
• In a reversible reaction, if one direction is exothermic, the other direction is endothermic, and the same amount of energy is transferred in each case
• The copper sulfate reaction is often asked about in exams