I just now read in my textbook that solids and liquids are not included in equilibrium expressions, are they included in rate laws? If not, why? Would a greater molar amount of solid or liquid increase the rate of reaction? And why isn't surface area included in Rate Laws? Also, for the equilibrium expression I understand that the concentration of a pure liquid or solid remains constant but why does it that means it has no bearing on k? Why doesn't increasing the concentration of a reactant solid increase the forward rate of reaction?