In this experiment you will column filled with an ion exchange resin to swap the copper ions from an unknown solution of copper(ii) nitrate with hydrogen ions. this will produce solution of nitric acid, hno,, which can then be analyzed via a traditional acid-base titration. 2 hno, + cu2-ion exchange resin use a a cu(no)22h-ion exchange resin knowing the concentration of nitric acid from your titration you will be able to calculate the concentration of copper(ii) nitrate in the unknown solution you are analyzing.