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प्रश्न
Write the equations of the reactions which take place at the cathode and anode when acidified water is electrolyzed.
उत्तर
Reaction at Cathode :
H+ + e- → H
H + H → H2
or 4H+ + 4e- → 2H2
Reaction at anode :
20H- - 2e- → H2O + O
or 4OH- - 4e- → 4OH
4OH → 2H2O + O2
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संबंधित प्रश्न
Define the following term:
Electrolysis
Give reason for the following:
Ammonia is unionised in the gaseous state but in the aqueous solution, it is a weak electrolyte.
Write down the word or phrase from the bracket that will correctly fill in the blank in the following sentence:
We can expect that pure water ________________ (will / will not) normally conduct electricity.
State your observation for the following electrolytic reaction:
Solid copper sulphate is electrolysed between platinum electrodes.
Fill in the blank :
The ions which discharge on the positive electrode during electrolysis ____________electrons. Thus, the ions are said to be _____________.
Name : A salt which is a weak electrolyte.
Name : A non-metallic element which is a conductor of electricity.
Choose the correct answer from the option given below:
Which among the following cations will discharge with ease at cathode?
Copy and complete the following sentence :
With platinum electrodes, hydrogen is liberated at the ______and oxygen at the _________ during the electrolysis of acidified water.
Electrolysis is the passage of ______ through a liquid or a solution accompanied by a ______ change.
