Question

For each cell that you made : (a)NICKEL(+) and copper(-) :bubbles on Nickel and copper doesnot have bubbles after 5 min nickel and copper doesnot look different but reation happer

(B)NICEKL(-) and copper(+) nickel turned into copper colour and copper was discoloured and was oxidized

for both a and b solve the part given below:

a) Give your observations.

b) Write half-reactions that are consistent with your observations.

c) Write the overall cell reaction

Answer 1

a) Observations:

In setup (a) copper is the anode and nickel is the cathode. The bubbles on nickel is due to its reaction with the electrolyte. In setup (b) nickel electrode turned into copper colour due to deposition of copper as it has a higher electrode potential.

b)