Consider the reaction Fe + Sn²⁺(1 * 10^-3 M) $\rarr$Fe²⁺(1.0 M) + Sn. Calculate the voltage theoretically generated by the cell.

Question

Quizplus · Accepted Answer

The equation for the cell is:

Fe + SnS2 + 2e- → FeS2 + Sn

The standard reduction potentials for the two half-reactions involved are:

Fe2+ + 2e- → Fe (E° = -0.44 V)

SnS2 + 2e- → Sn + 2S2- (E° = -0.15 V)

To calculate the overall cell potential, we need to subtract the potential of the anode (Fe) from the potential of the cathode (SnS2):

E°cell = E°cathode - E°anode
E°cell = (-0.15 V) - (-0.44 V)
E°cell = 0.29 V

The cell potential is positive, indicating that the reaction is spontaneous and that the cell can generate electricity. Therefore, the answer is B.

Consider the Reaction Fe + Sn2+(1 * 10-3 M) →\rarr→ Fe2+(1