Question

B. A redox reaction occurs in an electrochemical cell, where silver (Ag) is oxidized and nickel (Ni)

is reduced. (5 points)
i. Write the half-reactions for this reaction, indicating the oxidation half-reaction and the
reduction half-reaction. (1 point)
ii. Which metal is the anode, and which is the cathode? (1 point)
iii. Calculate the standard potential (voltage) of the cell. (2 point)
iv. What kind of electrochemical cell is this? Explain your answer. (1 point

Answer 1

See explanation

Step-by-step explanation:

i) Oxidation half-reaction:

2Ag(s) ----> 2Ag^+(aq) + 2e

Reduction half-reaction:

Ni^2+(aq) + 2e ----> Ni(s)

ii) Ag is the anode while Ni is the cathode

iii) E°cell = E°cathode - E°anode

E°cell = (-0.25) - (0.80)

E°cell = -1.05 V

iv) This is an electrolytic cell since the cell reaction is non spontaneous.