Question

The reduction potential of Fe2+ is 0.732 volts. The reduction potential of MnO4 in acidic solution is 1.507 volts. If you titrate KMnO4 with FeCl2 , what happens to the voltage of the solution as the titration starts and proceeds to the end?

Answer 1

The voltage decreases from 1.507 volts to 0.732 volts.
The voltage increases from 0.732 volts to 1.507 volts.
The voltage stays constant around 1.00 volts.
The voltage does not change.