These three equations show that the curves for CO 2 and HCO 3 intersect at [H ] eq = K 1, and the curves for HCO 3 and CO 3 intersect at [H ] eq = K 2. Therefore, the values of K 1 and K 2 that were used to create a given Bjerrum plot can easily be found from that plot, by reading off the concentrations at these points of intersection. An example with linear Y axis is shown in the accompanying graph. The values of K 1 and K 2, and therefore the curves in the Bjerrum plot, vary substantially with temperature and salinity.