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प्रश्न
Explain why it is preferable to use a number of graphite electrodes as the anode instead of a single electrode, during the above electrolysis.
उत्तर
The anode has got to be replaced from time to time as it gets oxidized by the oxygen evolved at the anode.
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संबंधित प्रश्न
State the electrode reaction at the anode during electrolysis of:
Fused lead bromide.
(a) Copy and complete the following table, which refers to two practical applications of electrolysis.
| Anode | Electrolyte | Cathode | |
| (i) Silver plating of a spoon | A solution of potassium argentocyanide | ||
| (ii) Purification of copper | |||
| (iii) Extraction of sodium |
(b) Write the equation taking place at the anode for Q. (a).
Fill in the blank :
Non-metallic ions are _____________ because they _____________ electrons.
Name : A base which is not alkali
Choose the correct answer from the option given below:
In electrolysis of molten lead bromine anode is made up of
Give one example of a substance which contain :
molecules only
Copy and complete the following sentence :
With platinum electrodes, hydrogen is liberated at the ______and oxygen at the _________ during the electrolysis of acidified water.
Identify the following reactions as either oxidation or reduction : Fe+3 + e- → Fe+2
Element X is a metal with a valency 2. Element Y is a non-metal with a valency 3.
If Y is a diatomic gas, write the equation for the direct combination of X and Y to form a compound.
Cations are formed by ______ of electrons and anions are formed by ______ of electrons.
