Chapter 15.3, Problem 27PP

Use the activity series in Table 15.3 to predict whether each of the following reactions will occur spontaneously:

a. $2\text{Au}(s)+6{\text{H}}^{+}(aq)\to 2{\text{Au}}^{3+}(aq)+3{\text{H}}_2(g)$

b. ${\text{Ni}}^{2+}(aq)+\text{Fe}(s)\to \text{Ni}(s)+{\text{Fe}}^{2+}(aq)$

c. $2\text{Ag}(s)+{\text{Cu}}^{2+}(aq)\to 2{\text{Ag}}^{+}(aq)+\text{Cu}(s)$