Question

Write the characteristics of Equilibrium Constant (${K_P}$ & ${K_C}$).

Answer 1

We can say that the equilibrium constant of a chemical reaction deals with the relationship between the products and reactants when a chemical reaction attains equilibrium. The equilibrium constant of chemical reaction is represented by symbol K.

Complete step by step solution:
-For a chemical reaction, the equilibrium constant could be defined as the ratio between the quantity of reactant and the quantity of product which is used to determine chemical behaviour.
-It is mandatory to notice that there are several different types of equilibrium constants that provide relationships between the products and the reactants of equilibrium reactions in terms of several various units.
-Rate of the forward reaction is the same as the rate of the backward reaction at equilibrium.
-At a specific temperature, the rate constants are constant. The ratio of the rate constant of forward reaction to the rate constant of backward reaction is constant and known as equilibrium constant.
-Some of the characteristics of equilibrium constant are,
Equilibrium constant is independent of initial concentrations of the reactants, the direction from reactant or product which equilibrium is reached.
-Volume, Pressure, and presence of a catalyst or any inert material are some of the factors that influence the value of equilibrium constant.
-Equilibrium constant provides a relative idea about the extent to which the reaction occurs.
At a given temperature, the equilibrium constant of a particular reaction has fixed value.
If the value of the equilibrium constant is large, then the forward reaction occurs nearing completion whereas backward reaction to a little extent.
-If the forward reaction is exothermic, then the value of equilibrium constant decreases.
In a reversible reaction, the value of equilibrium constant of forward reaction is inverse of value of equilibrium constant of backward reaction, which means, ${K_f} = \dfrac{1}{{{K_b}}}$.
-At equilibrium, the value of equilibrium constant is dependent on the stoichiometry of reactants, and products.

Note: We have to remember that at the constant pressure and temperature, for a chemical reaction the value of equilibrium constant is the same. But if there is change in temperature and pressure, there would be change in the equilibrium constant as well. The catalyst has no effect in the equilibrium constant but the rate of reaction is affected.