Consider the galvanic cell,Pb(s)∣ Pb²⁺(aq)∣∣ Cu²⁺(aq)∣ Cu(s).Which one of the following changes to the cell would cause the cell potential to increase (i.e. ,become more positive)?

Question

Quizplus · Accepted Answer

Increasing the concentration of Cu²⁺ in the cathode compartment would increase the concentration of Cu2+ ions available to be reduced, thus increasing the overall potential of the cell. The other choices do not have a significant effect on the potential of the cell. Increasing the concentration of Pb²⁺ in the anode compartment would only increase the rate of the forward reaction, not the overall potential. Changing the mass of Pb(s) does not affect the concentration of ions in the cell, and therefore does not affect the potential.

Consider the Galvanic Cell,Pb(s)∣ Pb2+(aq)∣∣ Cu2+(aq)∣ Cu(s)

Consider the Galvanic Cell,Pb(s)∣ Pb²⁺(aq)∣∣ Cu²⁺(aq)∣ Cu(s)