What is the relation between Qc & Kc ?? Reply soon...
The reaction quotient, Q, is the same as the equilibrium constant expression,
but for partial pressures or concentrations of the reactants and products before the
system reaches equilibrium.
For a reaction:
SO2Cl2(g) SO2(g) + Cl2(g)
Q may be expressed as the following equations:
Qc can be used to determine which direction a reaction will shift to reach equilibrium.
If Kc > Qc, a reaction will proceed forward, converting reactants into products.
If Kc < Qc, the reaction will proceed in the reverse direction, converting products into reactants. If Q = K then the system is already at equilibrium.
and if, Kc = Qc , equilibrium has been reached