Question

3. For the cell, Cu Cu? (0.13 M) || Ag* (0.01 M) 1 Ag,
(a) Calculate the reduction potential of each electrode if
the standard reduction potential for copper and silver
electrodes are 0.34 V and 0.80 V respectively.
(b) Calculate the emf of the cell.
(c) Write the cell reaction.
(d) Is this cell reaction spontaneous? Why?
(2001)​

Answer 1

Explanation:

Answer

Standard reduction potential of Ag

+

/Ag=0.80V.

Standard reduction potential of Cu

2+

/Cu is less than Ag

+

/Ag.

∴Ag

+

/Ag will get reduced at cathode.

Cu

2+

/Cu will get oxidized at anode.

∴E

cell

∘

=E

cathode

∘

−E

anode

∘

E

cell

∘

=0.80−0.34=0.46V.