The overall equation for the reaction occurring in a voltaic cell is:
Mg(s)+ZnSO4(aq)→MgSO4(aq)+Zn(s)
Which statement is correct when the cell produces electricity?
- I. Magnesium atoms lose electrons.
- II. The mass of the zinc electrode increases.
- III. SO42− ions migrate from the magnesium to the zinc electrode.