Chapter 19, Problem 101AP

Given the standard reduction potential for $\text{A}{\text{u}}^{\text{3+}}$ in Table 19.1 and:

${\text{Au}}^{\text{+}}\text{(aq) + }{e}^{-}\to \text{ Au(}s\text{) }E°\text{ = 1}\text{.69V}$

answer the following questions. (a) Why does gold not tarnish in air? (b) Will the following disproportionation occur spontaneously?

${\text{3Au}}^{\text{+}}\text{(aq) }\to {\text{Au}}^{\text{3+}}\text{(}aq\text{) + 2Au(}s\text{)}$

(c) Predict the reaction between gold and fluorine gas.