Give important characters of equilibrium.

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The important characteristics of equilibrium constant are :
(i) The equilibrium constant expression will be useful when the concentration of reactant and product became constant at equilibrium.
(ii) The value of equilibrium constant do not depend on initial concentration of reactant and product.
(iii) The equilibrium constant of backward reaction is reciprocal of equilibrium constant of forward reaction.
(iv) The equilibrium constant ( K ) of a reaction is related to equilibrium constant of the corresponding reaction whose equation is obtained by multiplying or dividing the equation of original reaction by small integer.
(v) The value of equilibrium constant is fixed for any chemical reaction expressed by a balanced equation, i.e. it depends on the stoichiometry of the reaction and the nature of the reactants and products.
(vi) The value of equilibrium constant for any reaction is constant at a certain temperature, i.e. it depends on temperature.

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