The reaction quotient ( ) for the reaction is given by:
N2(g) + 3 H2(g) 2NH3;
The reaction will proceed from right to left if:
Direction of reaction -
Direction of reaction is predicted with the help of reaction quotient Q.
The reaction quotient Q is defined in the same way as equilibrium constant Kc except that concentration are not necessarily equilibrium values.
If Qc > Kc -
The reaction will proceed in the direction of reactants ( Reverse direction )
Reaction will Proceed from right to left.