The standard reduction potential for a substance indicates how readily that subs

Question

The standard reduction potential for a substance indicates how readily that substance gains electrons relative to other substances at standard conditions. The more positive the reduction potentia, the more easily the substance gains electrons. consider the following. Zn^2+ (aq + 2e^- rightarrow Zn(s), E degree red = -0.763 V Cu^2 + (aq) + 2e^- rightarrow Cu(s), E degree red = + 0.337 V Part B What is the standard potential, E_cell degree, for this galvanic cell? Use the given standard reduction potentials in your calculation as appropriate.

Explanation / Answer

Zn2+ (aq) + 2e- —>Zn (s) Eo = -0.763 V

Cu2+ (aq) + 2e- —> Cu (s) Eo = +0.337 V

the one with greater Eo value will be reduced and will be the cathode

the other one will be the anode

Here cathode is Cu electrode and anode is Zn electrode

Eo cell = Eo cathode - Eo anode

   = 0.337 V - (-0.763) V

   = 1.100 V

Answer: 1.100 V

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