Chapter 16, Problem 29E

Determine the standard cell potential and the cell potential under the stated conditions for the electrochemical reactions described here. State whether each is spontaneous or nonspontaneous under each set of conditions at 298.15K.

(a) $\text{Hg}(l)+S^{2-}(\text{aq},0.10M)+2\text{Ag}+(\text{aq},0.25M)\to 2\text{Ag}(s)+\text{HgS}(s)$

(b) The cell made from an anode half-cell consisting of an aluminum electrode in 0.0 15M aluminum nitrate solution and a cathode half-cell consisting of a nickel in 0.25M nickel(II) solution.

(c) The cell made of a half-cell in which 1.0 M aqueous bromide is to 0.11 M bromine ion and a half-cell in which aluminum ion at 0.023M is reduced to aluminum metal.