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प्रश्न
Predict the product of electrolysis in the following:
A dilute solution of H2SO4 with platinum electrodes.
Predict the product of electrolysis obtained at the electrode in the case when the electrode used is platinum:
An aqueous solution of H2SO4.
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उत्तर
\[\ce{H2SO4_{(aq)} -> 2H{^+_{(aq)}} + SO^{2-}_{4(aq)}}\]
\[\ce{H2O ⇌ H^+ + OH^-}\]
At cathode: \[\ce{2H^+ + 2e^- -> H2_{(g)}}\]
\[\ce{H + H -> H2_{(g)}}\]
At anode: \[\ce{OH^- -> OH^- + e^-}\]
\[\ce{4OH -> 2H2O_{(l)} + O2_{(g)} + 4e-}\]
Hence, H2 will be released at the cathode and O2 at the anode.
संबंधित प्रश्न
Predict the product of electrolysis in the following:
An aqueous solution of AgNO3 with silver electrodes.
Predict the product of electrolysis in the following:
An aqueous solution of AgNO3 with platinum electrodes.
Predict the product of electrolysis in the following:
An aqueous solution of CuCl2 with platinum electrodes.
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How much electricity is required in coulomb for the oxidation of 1 mol of FeO to Fe2O3?
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\[\ce{Fe^{3+}_{ (aq)}}\] and \[\ce{I^-_{ (aq)}}\]
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\[\ce{Ag^+_{ (aq)}}\] and Cu(s)
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\[\ce{Fe^{3+}_{( aq)}}\] and \[\ce{Br^-_{( aq)}}\]
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Ag(s) and \[\ce{Fe^{3+}_{( aq)}}\]
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Write the reaction occurring at anode and cathode and the products of electrolysis of aq KCl.
Four half-reactions, I to IV are shown below:
- \[\ce{2Cl^- -> Cl2 + 2e^-}\]
- \[\ce{4OH^- -> O2 + 2H2O + 2e^-}\]
- \[\ce{Na^+ + e^- -> Na}\]
- \[\ce{2H^+ + 2e^- -> H2}\]
Which two of these reactions are most likely to occur when concentrated brine is electrolysed?
