Figure 11From: Effect of temperature and illumination on pyrite oxidation between pH 2 and 6Schematic diagram of reaction coordinate of hypothetical two-step reaction. Note that in panel A the activation energy on the basis of any of the three aqueous species should be the same. However, in B, the activation energy based on the formation of C(aq) will be different from the activation energy calculated on the basis of A(aq) and B(aq).Back to article page