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प्रश्न
Explain the preparation of hydrogen using electrolysis.
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उत्तर
High purity of hydrogen (>99.9%) is obtained by the electrolysis of water containing traces of acid or alkali or electrolysis of an aqueous solution of sodium hydroxide or potassium hydroxide using a nickel anode and iron cathode. This process is not economical for large-scale production.
- At anode: \[\ce{2OH^- -> H2O + 1/2O2 + 2e^-}\]
- At cathode: \[\ce{2H2O + 2e^- -> 2OH^- + H2}\]
- Overall reaction: \[\ce{H2O -> H2 + 14O2}\]
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संबंधित प्रश्न
A commercial sample of hydrogen peroxide marked as 100 volume H2O2, it means that
Volume strength of 1.5 N H2O2 is
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What is the importance of heavy water?
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Hydrogen peroxide is obtained by the electrolysis of ______.
Which of the following will happen when a little hydrogen peroxide is added to a solution of ferrous sulphate?
H2O2 can be obtained when the following reacts with H2SO4 except with:
The products obtained from a reaction of hydrogen peroxide and acidified potassium permanganate are ______.
The strength of the 11.2 volume solution of H2O2 is ______.
[Given that molar mass of H = 1 g mol−1 and O = 16 g mol−1)
