Question

State and explain le chatelier's principle suitably with reference to 1. change in temperature 2. change in concentration​

Answer 1

Le Chatelier's principle is an observation about chemical equilibria of reactions. It states that changes in the temperature, pressure, volume, or concentration of a system will result in predictable and opposing changes in the system in order to achieve a new equilibrium state.

Answer 2

State and explain Le ch-atelier's principle suitably with reference to 1. change in temperature 2. change in concentration​

Explanation:

Equilibrium

It is actually a state when forces from both the side become equal. According to chemistry: It is a point in a chemical reaction, when rate of forward reaction becomes equal to rate of backward reaction.

Or we can say, it is the state when concentration of reactants becomes equal to concentration of products.

Le chartlier’s principle

We know that at equilibrium, the state variables become constant. If we disturb any state variable, the reaction gets disturbed and the reaction diverts itself in a direction where disturbance is reduced.

So, according to this “ if any kind of reaction is subjected to any kind of stress, then the reaction proceeds in a direction where the stress gets reduced “.

(a) Effect of change in concentration : For this consider a reaction:

•  In this if concentration of nitrogen gas is increased, the reaction will get disturbed. It will proceed in a direction in which the concentration of nitrogen gas is reduced i.e in forward direction.

It is to be noted:

• If concentrations of reactants are increased, then the reaction favors products.  

•  If concentration of products is increased, then the reaction favors backward reaction.

(b) Effect of temperature: We have two types of reactions: Endothermic and Exothermic.  

• If we increase the temperature, the reaction proceeds in such a direction in which the heat is absorbed i.e endothermic side is favoured.

• If we decrease the temperature, the reaction proceeds in such a direction in which the heat is released i.e exothermic side is favoured.