10- An electrochemical cell is composed of pure copper and pure cadmium electrodes immersed in solutions of their respective divalent ions. For a 6.5 x 10 M concentration of cd", the cadmium electrode is oxidized, yielding a cell potential of 0.775 V. Calculate the concentration of Cu" ions if the temperature is 25C. (6pts) Standard Electrode Electrode Reaction Potential, V (V) Au + 36"Au +1.420 0, + 4H+ + 42H,0 +1.229 P+ 2e-P +1.2 Agt + - Ag +0.800 Fe + Fe +0.771 O + 2H2O + 4 4OH) +0.401 Cu +2 Cu +0.340 2H+ + 2 H, 0.000 Pb2+ + 2 Pb -0.126 Sn +2 Sn -0.136 NI+ 2Ni -0.250 Co + 2 Co -0.277 C + 2a -0.403