For each of the following pairs of substances, determine if a redox reaction would occur if you were to mix them in a single solution. For those pairs of substances that would not react, calculate the EOCELL of the unfavored reaction between the two substances.
Na(s) and Li+
Fe2+ and Ag+
MnO4- and Hg(l) in acidic solution
MnO4- and Hg(l) in basic solution