The non-linear effect of electrostatic correlations gets further amplified when we examine the charge states of the same solute in the polyelectrolyte complex phase, shown in Figure ). Here, we observe that population of the uncharged state is suppressed much more than in the supernatant and it is shifted to lower pH values by about 0.5 unit. Population of the monovalent state reaches a maximum at pH < 4 < pK A,1 , which is more than 1 pH unit lower than position of the maximum of the ideal curve. Interestingly, population of the divalent ions starts to dominate already at pH ≈ 4, although the ideal curve predicts that this popuplation should be vanishingly small at the given pH. Again, the non-linear effect of electrostatic correlations causes that the divalent state of the diprotic acid is strongly preferred in the interpolyelectrolyte complex and starts to dominate already two units of pH below the value pK A,2 .