A voltaic cell is based on the following two half-reactions: Cd2 (ag) +2e-> Cd (s) Sn2(aq)+...

Question

Question

science chemistry

Answer 1

Answer #1

Cd2+(aq) + 2e- -----> Cd(s) E° = -0.403 V

Sn2+(aq) + 2e- -------> Sn(s) E° = - 0.136 V

Sn2+ is more positive so it will reduced at cathode and Cd2+ oxidized at anode.

E°cell = E°cathode - E°anode

E°cell = -0.136 V - (-0.403V)

E°cell = +0.267V

~ +0.27V

Hence, the correct option is (d) 0.27

Answer 2

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