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Electrolytic Refining

Copper sulpha...

Question

Copper sulphate solution is electrolysed using copper electrodes.

(iii) State two appropriate observations for the above electrolysis reaction.

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Solution

Observations for the above electrolysis reaction.

The anode dissolves into the solution

Anode mud containing precious metal is recovered.

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Similar questions

Q. State your observations for the following electrolytic reactions:
(a) Solid copper sulphate is electrolysed between platinum electrodes.
(b) Aqueous copper sulphate is electrolysed between platinum electrodes.
(c) Aqueous copper sulphate is electrolysed between copper electrodes.

(a) State one appropriate observation for: Electricity is passed through molten lead bromide.

(b) State which of these will act as a non-electrolyte

(i) Liquid carbon tetrachloride

(ii) Acetic acid

(iii) Sodium hydroxide aqueous solution

(iv) Potassium chloride aqueous solution

(c) Copper sulphate soln. is electrolysed using copper electrodes.

(i) Which electrode to your left or right is known as the oxidising electrode and why ?

(ii) Write the equation representing the reaction that occurs.

(iii) State two appropriate observations for the above electrolysis reaction.

(d) Identify : A gas which does not conduct electricity in the liquid state but conducts electricity when dissolved in water.

Q. Explain, why during the electrolysis of copper sulphate using copper electrodes, the colour of solution does not fade.

Q. The following questions refer to the electrolysis of copper sulphate solution with copper electrodes:
(a) Compare the change in mass of the anode.
(b) What is seen to happen to the colour of the copper sulphate solution if platinum electrodes are used? Explain this observation.
(c) What is the practical application of the electrolysis of copper sulphate solution? Briefly, describe one such application.

Copper sulphate solution is electrolysed using copper electrodes. State one relevant observation.

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Electrolytic Refining

Standard X Chemistry

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