2. Use the given half reactions to "construct" an electrolytic cell. Ca2+ + 2 e- → Ca Eocell=-2.76 V Cu2+ + 2 e- → Cu Eocell=0.34 V Predict the standard potential of the cell at 298 K.

The equation below shows the reaction of zinc with hydrochloric acid (hcl). zn (s) + 2 hcl (aq) —> zncl2 (aq) + h2 (g) what will happen if the concentration of hcl is decreased? a. more zncl2 will be produced. b. the reaction rate will slow down. c. the hydrochloric acid will become more acidic. d. the reaction will produce water instead of hydrogen gas.