Match the column (for electrolytic refining of Cu) :

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Solution

In the electrolytic refining of $C u$ , the anode is impure metal of $C u$ and the cathode is made from thin sheets of pure $C u$ . The electrolyte used is an aqueous solution of copper sulphate containing $H_{2} S O_{4}$ . The anode mud contains $A g, A u$ .

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Match the column (for electrolytic refining of Cu):
$\begin{matrix} Column-I & Column-II (a) & Anode & (p) & Thin sheets of pure Cu (b) & Cathode & (q) & An aqueous solution of copper sulphate containing H_{2} {SO}_{4} (c) & Electrolyte & (r) & Ag, Au (d) & Anode mud & (s) & Impure metal of Cu \end{matrix}$

Match the column (for electrolytic refining of Cu):
$\begin{matrix} C o l u m n - I & C o l u m n - I I (a) & A n o d e & (p) & T h i n s h e e t s o f p u r e C u (b) & C a t h o d e & (q) & A n a q u e o u s s o l u t i o n o f c o p p e r s u l p h a t e c o n t a i n i n g H_{2} S O_{4} (c) & E l e c t r o l y t e & (r) & A g, A u (d) & A n o d e m u d & (s) & I m p u r e m e t a l o f C u \end{matrix}$

Q. In electrolytic refining of Cu, when 9.65 A of current is passed through an electrolytic cell for 30000 seconds to purify 100 g of an impure Cu metal at the cathode. What is % of impurity in the metal? (Atomic mass of Cu = 63.5 amu)

Q. Which of the following metals are refined by electrolytic refining?

(i)

A u

(ii)

C u

(iii)

N a

(iv)

K

In the electrolytic refining of Copper (electrolyte is $C u S O_{4}$ solution + dil $H_{2} S O_{4}$ _;Pure Cu cathode and Impure Cu anode), metallic impurities having lower oxidation potential than Cu are deposited as __ sludge.

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Match the column (for electrolytic refining of Cu) :

In the electrolytic refining of Cu, the anode is impure metal of Cu and the cathode is made from thin sheets of pure Cu. The electrolyte used is an aqueous solution of copper sulphate containing H2SO4. The anode mud contains Ag,Au.

In the electrolytic refining of $C u$ , the anode is impure metal of $C u$ and the cathode is made from thin sheets of pure $C u$ . The electrolyte used is an aqueous solution of copper sulphate containing $H_{2} S O_{4}$ . The anode mud contains $A g, A u$ .