An electrochemical cell contains a standard hydrogen electrode and a cathode consisting of a metallic chromium electrode, Cr(s), in contact with a 1.00 M chromium solution, Cr3+(aq). The voltage produced by this cell was measured at 25°C. Which statements describe the results of this measurement, assuming the conditions are ideal? The cell voltage with the appropriate sign equalsI. the oxidation potentialII. the driving force for the transfer of electrons between reactants. III. the standard cell potential. IV. the standard reduction potential for Cr3+/Cr.