The diagram shows the conventional representation of a cell used in a portable device.
Mg(s)|Mg2+(aq)||Ag+(aq)|Ag(s)
| Half-equation | EΘ / V |
|---|---|
| Mg2+(aq) + 2e- → Mg(s) | -2.37 |
| Ag+(aq) + e- → Ag(s) | +0.80 |
Calculate the e.m.f. of this cell.
[1]
Deduce the overall equation for the cell reaction and identify the oxidising agent.
[2]