The law of mass action can be represented as follows:
k1 | ||
[Ag] x [Ab] | ----------------> | [Ag * Ab] |
k2 |
where [ ] = concentration, K1 = association constant, and k2 = disassociation constant.
Because we want to obtain a large [Ag.Ab], we want k1 to be larger than k2. Put another way,
k1 | [Ag * Ab] | |
k = | ----- | = -------------- |
k2 | [Ag] x [Ab] |
Law of Mass Action |