Step-by-step explanation:
Le Chatelier's Principle -
For a reaction in dynamic equilibrium , any change in concentration , temperature , volume , and pressure disturbs the equilibrium and the reaction might goes towards reactant side or product side , this change is studied by the help of Le Chatelier's Principle.
According to Le Chatelier's principle,
By changing the conditions of pressure, volume, temperature and no. of moles the equilibrium is disturbed and the equilibrium shifts in a direction to counteract the change.
Equlibrium is affected by the following condition -
A. Change in concentration -
If the concentration of any species of chemical reaction is increased , the reaction will again try to establish the equilibrium by trying to reduce the concentration of that species.
B. Effect of change in pressure -
According to Le Chatelier's principle,
If the pressure is increased , the equilibrium of the reaction is disturbed , so, the reaction will move in order to decrease the pressure. The molecules of gas are responsible for pressure ,
So, To decrease the pressure, reaction will go towards the side with less number of gaseous molecules.
3. Effect of change in volume -
Pressure and volume of the system are inversely proportional to each other. So if the volume of the system is increased, the pressure of the system will decrease and hence, equilibrium of the system will be disturbed. In order to attain equilibrium again, system will move towards the side having more no. of gaseous molecules to increase pressure.
4. Effect of change in temperature -
For an exothermic reaction,
On increasing temperature , the reaction will go in the backward direction (towards left), because , according to Le Chatelier's principle as we increase the temperature, the equilibrium is will be disturbed , so to again establish the equilibrium, the temperature need to be reduced , hence , the reaction will go in backward direction (towards left).
For an endothermic reaction,
On increasing temperature , the reaction will go in the forward direction (towards left), because , according to Le Chatelier's principle as we increase the temperature, the equilibrium is will be disturbed , so to again establish the equilibrium, the temperature need to be increased, hence , the reaction will go in forward direction (towards right).