What is the effect of increasing the temperature of an endo- thennic reaction mixture at equilibrium? Of decreasing the temperature?
Solution 25Q :
Le Chatelier's principle is also called as ‘The equilibrium law’. It states that ‘ The changes to an equilibrium system will result in a predictable shift that will counteract the change’. It is used to predict the changes in system that is caused due to temperature, pressure, volume or concentration.
Changes in pressure is applicable only to gaseous systems. Increase in the pressure results in decrease in the volume and less space, In this case, the equilibrium shifts to the side of the reaction with fewer moles. Decrease in pressure results in increase in volume and hence there is more space and in this case, the equilibrium shifts to the side with more moles.
Hence, decreasing the pressure of a reaction mixture at equilibrium and if the product side has fewer moles of gas particles than the reactant side, then the equilibrium shifts on the reactant side as reactants have more moles than the product side.