Question

A metal article is to be electroplated with silver.
Answer the following questions :
to Which ions must be present in electrolyte ?
What will be the nature of the (1) anode
(2) cathode?
(m) Name the gas evolved at anode when following
are electrolysed:
1. Molten lead bromide.
2. Concentrated hydrochloric acid.
3. Acidulated water
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Answer 1

Answer:

The electrolyte MUST contain Silver ions.

The Nature of :

• Cathode - Pure metal (Positively charged)
• Anode - Impure metal (Negatively charged)

The gases evolved at anode on electrolysis of :

1. PbBr2 - Br2 gas
2. HCl - Cl2 gas
3. H2O - O2 gas

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Answer 2

electrolyte contain silver ion.
the nature of:
cathode -pure metal(+)
anode -impure metal(-)
The gases evolved at anode electrolysis of:
pbBr2-Br2 gas.
hcl-cl2 gas
h2o-o2 gas