For the electro-refining of copper, what is the cathode made up of?

In the electro-refining of copper, the cathode is made up of pure thin sheet of copper and the anode is made up of impure plate of copper and the electrolyte used here is aqueous copper sulphate solution.

Give a reason for the following. Conductivity of dilute hydrochloric acid is greater than that of acetic acid.

HCl is a strong electrolyte and hence it can dissociate completely in aqueous solution which make it a good conductor of electricity whereas acetic acid is a weak electrolyte and it partially dissociates into ions which makes it a poor conductor than dilute hydrochloric acid.

E M B I B E

All in One - ICSE Chemistry>Chapter 6 - Electrolysis>CHAPTER EXERCISE>Q 1

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10th ICSE

IMPORTANT

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In electrolysis process anion undergoes .

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Important Questions on Electrolysis

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10th ICSE

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All in One - ICSE Chemistry>Chapter 6 - Electrolysis>CHAPTER EXERCISE>Q 3

The solid lead bromide will not (i) ______ an electric current, because the (ii) _____ are held in (iii) _____ lattice by strong (iv) ______ force. The ions are (v) ______ to move to (vi) ______. When the solid is (vii) ______, the ions are (viii) ______ and (ix) ______ the flow of an electric current, and the cation (x) ______ is liberated at cathode and (xi) ______ gas is liberated at the anode.

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All in One - ICSE Chemistry>Chapter 6 - Electrolysis>CHAPTER EXERCISE>Q 5

Aluminium is obtained by the electrolysis of __________ where, __________ lining of electrolytic cell act as ___________ and graphite rod as _____________. The electrolyte used is _____________.
Reaction at ______ :