Experiment was set as shown below.

Experiment was set as shown below.


(a) What is observed on the bulb when the switch is closed?
(b) Which electrode will be cathode?
(c) Write down the half-cell equations for:
(i) Copper electrode.
(ii) Zinc electrode.
(d) Write the overall ionic equation for the electrochemical cell.
(e) The table below shows the electrode potentials.

What is the value of the voltage of the cell?
(f) The switch is kept closed. State and explain the observation expected after sometime on the
(i) The zinc rod.
(ii) Copper (II) Sulphate solution.

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a. The bulb lights
b. Copper rod
c.


ii. Zn(s) -------------------->Zn2+(aq) + 2e



e. +0.34--- 0.76v = 1.10v

f.(i) The zinc rod becomes thinner because it dissolves in solution forming ions
(ii) The blue colour of copper(ii) sulphate solution fades, because the copper ions are being removed from the solution forming copper solid(brown)

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maurice.mutuku answered the question on September 11, 2019 at 07:03

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