What are the products of the electrolysis of dilute sodium chloride?
The three products of the electrolysis of concentrated sodium chloride solution have important uses in the chemical industry:
- hydrogen is used as a fuel and for making ammonia.
- chlorine is used to sterilise water supplies, and to make bleach and hydrochloric acid.
- sodium hydroxide is used to make soap, paper and bleach.
When an aqueous solution of sodium chloride is electrolysed using platinum electrodes the ion discharged at the electrodes are?
When an aqueous solution of sodium chloride is electrolysed using platinum electrodes, the ion discharged at the electrodes are. As the reduction potential of hydrogen is lower than that of sodium, it will be discharged at the cathode and chloride will be discharged at the anode.
What is the result of electrolysis of water using platinum electrodes?
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. At the anode, water is oxidized to oxygen gas and hydrogen ions. …
Why platinum electrode is used in electrolysis of acidified water?
The gases formed on the electrolysis of the dilute sulfuric acid can be collected via the same taps. The platinum or carbon electrodes are inert. You need inert (non–reactive) electrodes like platinum (left) and much cheaper carbon (graphite electrodes, right).
When dilute sodium chloride solution is electrolysed using graphite electrodes The cation that discharge readily at the cathode?
When dilute sodiun chloride is electrolysed using graphite electrodes, the cation which is discharged at the cathode most readily is H+ ions. Since it is a dilute NaCl solution H+ ions concentration is more.
What is the negative electrode called in electrolysis?
the cathode
The negatively charged electrode in electrolysis is called the cathode . Positively charged ions move towards the cathode. The positively charged electrode in electrolysis is called the anode . Negatively charged ions move towards the anode.
What happens when NaCl is electrolysed using platinum electrode?
In electrolysis of NaCl when Pt electrode is taken then H2 is liberated at cathode while with Hg cathode it forms sodium amalgam because : c) Na is dissolved in Hg while it does not dissolve in Pt.
When concentrated sodium chloride is electrolysed with platinum electrodes which products are produced at the electrodes?
The three products from the electrolysis of sodium chloride solution are all of industrial significance: hydrogen, chlorine and sodium hydroxide.
What happens during the electrolysis of sodium chloride?
As shown above, the electrolysis of sodium chloride solution will produce chlorine gas at the anode and hydrogen gas at the cathode. During the electrolysis, hydrogen and chloride ions are removed from solution whereas sodium and hydroxide ions are left behind in solution.
What is electrolysis of water class 10?
Electrolysis of water is the chemical reaction in which the decomposition of hydrogen and oxygen gases is carried by passing an electric current. The electrolysis of water is mainly carried out to yield pure hydrogen and oxygen gases.
Which electrodes are used during electrolysis of acidulated water?
Thus, during electrolysis of acidulated water, gas is collected at cathode is hydrogen and gas collected at anode is oxygen. Hence, the correct option is (A) Hydrogen, Oxygen. Note: During electrolysis, electrical energy is passed through the electrolyte present in the electrolysis cell.
Why is electrolysis of dilute sulphuric acid called electrolysis of water?
A diluted form of sulphuric acid is called acidic water. Sulphuric acid is added to water in order to increase the number of ions. Therefore, the electrolysis of dilute sulphuric acid is also called the electrolysis of acidic water.
What happens in electrolysis of molten sodium chloride?
Electrolysis is, also done in the presence of additional salts to aid the redox reactions. Electrolysis of Molten Sodium Chloride Electrolysis involves the movement of ions to the electrode. Solid-state does not allow the movement of ions and unsuitable for electrolysis.
How is sodium chloride dissociated in aqueous solution?
Electrolysis of Aqueous Sodium Chloride Sodium chloride is dissociated and exists as sodium and chloride ions in aqueous solution. Electrolysis of sodium chloride is easier in aqueous solution. But, water itself can undergo reduction and oxidation reactions at different potentials.
Which is a side product of sodium hydroxide in electrolysis?
With a side product of sodium hydroxide resulting from the reaction of sodium and water. The product of electrolysis depends on the concentration of sodium chloride aqueous solution. Water has very low conductivity and the small amount of ionic sodium chloride helps the ionic conductivity of the solution.
Where is graphite cathode in sodium chloride electrolysis?
In the Castner-Kellner process, brine (aqueous sodium chloride) is, electrolyzed in a cell having two compartments. Graphite anode is in the side compartments and iron cathode in the central compartment.