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प्रश्न
Explain what is meant by electrolysis of water. Write the electrode reactions and explain them.
उत्तर
Electrolysis of water is the decomposition of water into oxygen and hydrogen gas due to an electric current being passed through acidified water.
Cathode reaction:
\[\ce{2H2O_{(l)} + 2e- -> H_{2(g)} + 2OH_{(aq)}}\]
Anode reaction:
\[\ce{2H2O_{(l)} -> O_{2(g)} + 4H^+_{(aq)} + 4e^-}\]
It is found that the volume of gas formed near the cathode is double that of the gas formed near the anode. Hydrogen gas is formed near the cathode, and oxygen gas near the anode.
From this, it is clear that water electrolysis has taken place and its constituent element has been released.
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संबंधित प्रश्न
The gas collected at the cathode on electrolysis of water is
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Latent heat of fusion
Name the gas evolved at cathode and anode when water is electrolysed. State their ratio by volume.
Explain specific latent heat of vaporization of water.
What is Electrolysis? Explain the electrolysis of water.
In the process of electrolysis of water, the positive carbon electrode acts as ______.
