Chemical equilibrium should be writing given the reaction quotients (Qc).
Chemical equilibrium: The term applied to reversible chemical reactions. It is the point at which the rate of the forward reaction is equal to the rate of the reverse reaction. The equilibrium is achieved when the concentrations of reactants and products become constant.
Balancing of equilibrium reaction: The many of chemical reaction involving for, reversible reaction is occurring backwards and forwards at the time by the same amount, it is balancing point of a chemical reaction, it seems to stop happening when the rates are equal equilibrium has occurred.
Reaction quotient (Qc): To measures the relative amounts of products and reactants during a reaction process at a particular time. This (Qc) find out the which direction a reaction is likely to proceeds given either pressure or other concentration of the respective reactants of products.
To find: The equilibrium reaction should be solved given the reaction quotients (a-f).