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What does discharged mean in electrolysis?

This simply means that in electrolysis, the more reactive the metal, the least tendency for the metal ions to be preferentially discharged at the cathode. Hydrogen ion and ions of less reactive metals like copper and silver will be preferentially discharged.

What happens to sulphate ions in electrolysis?

The negative sulfate ions (SO42-) or the traces of hydroxide ions (OH– from water) are attracted to the positive electrode. But the sulfate ion is too stable and nothing happens. Instead either hydroxide ions or water molecules are discharged and oxidised to form oxygen.

What are the factors affecting electrolysis?

What are the factors affecting the product of electrolysis?

  • i) Nature and state of the electrolyte.
  • ii) Nature and electrode potential of ions present in the electrolyte.
  • iii) Nature of the electrode.
  • iv) Overvoltage at the electrodes.

What happens when voltage is increased during electrolysis?

A higher potential difference (voltage) applied to the cell means the cathode will have more energy to bring about reduction, and the anode will have more energy to bring about oxidation. Higher potential difference enables the electrolytic cell to oxidize or reduce energetically more “difficult” compounds.

What does the amount of a metal deposited during electrolysis depends on?

What does the amountof metal deposited during electrolysis depend upon ? It depends on the amount of current passed, time and the type of metal (atomic mass).২৪ জানু, ২০১৭

Which is the chemical equation for electrolysis?

Overall reaction: 2 H2O(l) → 2 H2(g) + O2(g) The number of hydrogen molecules produced is thus twice the number of oxygen molecules. Assuming equal temperature and pressure for both gases, the produced hydrogen gas has, therefore, twice the volume of the produced oxygen gas.

Why is electrolysis of water important?

The electrolysis of water produces hydrogen and oxygen gases. The electrolytic cell consists of a pair of platinum electrodes immersed in water to which a small amount of an electrolyte such as H2SO4 has been added. The electrolyte is necessary because pure water will not carry enough charge due to the lack of ions.৪ মার্চ, ২০২১

Why H2SO4 is used in electrolysis of water?

As sulphuric acid is a strong acid and it will dissociate into ions completely. And during electrolysis of water, as we add sulphuric acid, the number of ions increases and because of these ions, the solution become conducting.