Copy and complete the following table which refers to two practical applications of electrolysis.

Anode Electrolyte Cathode

Silver plating
of a spoon

Purification
of copper Solution of
potassium
argentocyanide

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Solution

Anode Electrolyte Cathode

Silver plating of a spoon Pure silver block Solution of potassium argentocyanide Spoon

Purification of copper Impure copper Acidified copper sulphate solution Thin strip of pure copper

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Q. Copy and complete the following table which refers to two practical applications of electrolysis:

	Anode	Electrolyte	Cathode
Silver plating a spoon		Solution of potassium argentocyanide
Purification of copper

(a) Copy and complete the following table which refers to two practical applications of electrolysis

$\begin{matrix} A n o d e & E l e c t r o l y t e & C a t h o d e (i) S i l v e r p l a t i n g & S o l u t i o n o f o f a s p o o n & p o t a s s i u m a r g e n t o c y a n i d e (i i) P u r i f i c a t i o n O f c o p p e r (i i i) E x t r a c t i o n O f s o d i u m \end{matrix}$

(b) Write equations of reactions taking place at anode for Q.2(a).

The following questions refer to the electrolysis of CuSO₄ solution with copper electrodes.
(i) What is the change in the mass of cathode and anode?
(ii) What will happen to the colour of the electrolyte if platinum electrodes are used? Explain.
(iii) Briefly, describe one practical application of electrolysis of CuSO₄ solution.

Q. During silver plating of an article using potassium argentocyanide as an electrolyte, the anode material should be :

Q. During the electrolysis of copper [II] sulphate solution using platinum as cathode & carbon as anode. State the change noticed in the electrolyte.

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	Anode	Electrolyte	Cathode
Silver plating of a spoon	Pure silver block	Solution of potassium argentocyanide	Spoon
Purification of copper	Impure copper	Acidified copper sulphate solution	Thin strip of pure copper

Copy and complete the following table which refers to two practical applications of electrolysis. Anode Electrolyte Cathode Silver plating of a spoon Purification of copper Solution of potassium argentocyanide

Anode Electrolyte Cathode Silver plating of a spoon Pure silver block Solution of potassium argentocyanide Spoon Purification of copper Impure copper Acidified copper sulphate solution Thin strip of pure copper

Copy and complete the following table which refers to two practical applications of electrolysis.

Anode Electrolyte Cathode

Silver plating
of a spoon

Purification
of copper Solution of
potassium
argentocyanide

Anode Electrolyte Cathode

Silver plating of a spoon Pure silver block Solution of potassium argentocyanide Spoon

Purification of copper Impure copper Acidified copper sulphate solution Thin strip of pure copper