Copper sulphate solution is electrolyzed using a platinum anode.

(a) Study the diagram given alongside and answer the following questions:

(i) Give the name of the electrodes A and B.

(ii) Which electrode is the oxidizing electrode?

(b) A strip of copper is placed in four different colourless salt solutions. They are KNO3, AgNO3, Zn(NO3)2, Ca(NO3)2. Which one of the solutions will finally turn blue?

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1 Answers

(a) (i) The name of electrode A is Platinum anode and that of electrode B is platinum or copper cathode.

(ii) Anode act as oxidizing electrode.

(b) AgNO3 solution will turn blue.

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