A galvanic cell consists of a left compartment with a tin electrode in contact with 0.1 M Sn(NO3) 2(aq) and a right compartment with a lead electrode in contact with 1 10-3 M Pb(NO3) 2(aq) .The relevant reduction potentials are: Pb2+ + 2e- Pb
° = -0.13 V
Sn2+ + 2e- Sn
° = -0.14 V
When this cell is allowed to discharge spontaneously at 25°C,which of the following statements is true?
A) Electrons will flow from left to right through the wire.
B) Pb2+ ions will be reduced to Pb metal.
C) The concentration of Sn2+ ions in the left compartment will increase.
D) The tin electrode will be the cathode.
E) No noticeable change will occur,because the cell is at equilibrium.
Correct Answer:
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