capacity of the solid. 12.4-4. Effect of Total Concentration on Loading of Ion-Exchange Resin. Use the condi- tions of Example 12.4-1 for ion exchange of Cu+ with H. However, determine the effect of total concentration in the solution on the loading of Cut on the resin. Do this for a total concentration of 0.010 N in the solution at equilibrium instead of 0.10 N. Also, the concentration of Cu2+ in the solution is 0.002 M (0.004 N) instead of 0.02 M. Ans. 9cuR, = 0.9132 equiv/L EXAMPLE 12.4-1. Removal of Cup Ion from Acid Solution by an Ion-Erchange Resin A waste acidic stream contains copper in solution which is being removed by a strong acid-cation resin. The cation Cu (A) is displacing the cation H (B) in the resin. A polystyrene resin similar to that in Table 12.4-1 is being used. The total resin capacity Q is approximately 1.9 equivalents/L of wet bed volume. For a total concentration C of 0.10 N (0.10 equivalents/L) in the solution, calculate at equilibrium the total equivalents of Cu+ in the resin when the concentration of Cu? in solution is 0.02 M (0.04 N)