Calculate the standard cell potential (from the Standard Reduction Potentials Table located in Files) for each reaction below; and note whether the reaction is spontaneous under standard state conditions:
1. Mg(s) + Ni2+(aq) -> Mg2+(aq) + Ni(s)
2. 2 Ag+(aq) + Cu(s) -> Cu2+(aq) + 2 Ag(s)
3. Mn(s) + Sn(NO3)2(aq) -> Mn(NO3)2(aq) + Sn(s)
4. 3 Fe(NO3)2(aq) + Au(NO3)3(aq) -> 3 Fe(NO3)3(aq) + Au(s)
Write the balanced cell reaction for the cell schematic below; calculate the standard cell potential, and note whether the reaction is spontaneous under standard state conditions:
Cu(s) | Cu2+(aq) || Au3+(aq) | Au(s)