Chapter 18, Problem 18.45QE

Use the data from the table of standard reduction potentials in Appendix H to calculate the standard potential of the cell based on each of the following reactions. In each case, state whether the reaction proceeds spontaneously as written or spontaneously in the reverse direction under standard-state conditions.

(a) ${\text{H}}_{\text{2}}\left(\text{g}\right)+{\text{Cl}}_2\left(\text{g}\right)\to 2{\text{H}}^{+}\left(\text{aq}\right)+2{\text{Cl}}^{-}\left(\text{aq}\right)$

(b) ${\text{Al}}^{3+}\left(\text{aq}\right)+3{\text{Cr}}^{2+}\left(\text{aq}\right)\to \text{Al}\left(\text{s}\right)+3{\text{Cr}}^{3+}\left(\text{aq}\right)$

(c) ${\text{Fe}}^{2+}\left(\text{aq}\right)+{\text{Ag}}^{+}\left(\text{aq}\right)\to {\text{Fe}}^{3+}\left(\text{aq}\right)+\text{Ag}\left(\text{s}\right)$