The following reaction occurs spontaneously.
$$
\mathrm{Ru}^{2+}(a q)+\mathrm{Cd}(s) \longrightarrow \operatorname{Ru}(s)+\mathrm{Cd}^{2+}(a q)
$$
What reaction will occur if a mixture is prepared containing the following: $\mathrm{Cd}(s), \mathrm{Cd}\left(\mathrm{NO}_{3}\right)_{2}(a q), \mathrm{Tl}(s),$ and
$\mathrm{TlCl}(a q) ?$ (Refer to the information in Problem 5.67.)