Cu2+(aq) + Zn(s) ---> Cu(s) + Zn2+(aq) A galvanic cell that uses the reaction shown above has a standard state electromotive force of 1.1 volts. Which of the following changes to the cell will increase the voltage? I. An increase in the mass of Zn(s) in the cell II. An increase in the concentrtion of Cu2+(aq) in the cell. III. An increase in the concentration of Zn2+(aq) in the cell. a. I and III only b. II only c. I and II only d. I only e. III only