Question

electrolysis is a redox process exlain​

Answer 1

Answer:

Redox is a reaction, where one reactant oxidises and other reactant reduces.

In electrolysis like electrolysis of water

$At \: anode: 2H {}^{2} O→O {}^{2} +4H {}^{ + } +4e {}^{ - }  oxidation \\ </p><p>At \: cathode: 4H {}^{2} O+4e {}^{ - } →2H2 {}^{2} +4OH−  reduction</p><p></p><p>$

(i) Cathode (Reducing electrode) : At cathode, the cations gain electrons to form neutral atoms. As electrons are gained, the ion is said to be reduced.

(ii) Anode (Oxidizing electrode) : At anode, the anions lose electrons to form neutral atoms. As electrons are lost, the ion is said to be oxidized.

Explanation:

✯ADDITIONAL INFORMATION

☆What is electrolysis

In chemistry and manufacturing, electrolysis is a technique that uses direct electric current (DC) to drive an otherwise non-spontaneous chemical reaction. Electrolysis is commercially important as a stage in the separation of elements from naturally occurring sources such as ores using an electrolytic cell. The voltage that is needed for electrolysis to occur is called the decomposition potential.

☆The Process of Electrolysis

Simply explained, the process of electrolysis refers to decomposition of a given element under the influence of an electric current. The first electrolysis was carried out by Sir Humphrey Davey in the year 1808. This experiment revealed new understandings about the way certain elements behave and how they are different from compounds and ions.

☆What are the Implications of an Electrolysis Reaction?

There are some fundamental learnings which can be devised out of an electrolysis reaction, which are as follows:

• For the supply of electrons, an external power source has to be employed. This makes an electrolytic cell an almost opposite of a galvanic cell.

• The potential difference between the electrodes is the reason why the transfer of ions takes place.

• Whenever an aqueous solution is subjected to the electrolytic process, water can undergo oxidation and reduction processes and may even become the dominated process in the experiment if a sufficient amount of voltage is applied to the solution

• The practical applications of the process of electrolysis include refining of metals in heavy industries, production of organic and inorganic products and more, which are later used by other industries for varying purposes.

☆Faraday’s Law of Electrolysis

As stated in the law of Faraday, when one mole of electric charge is made to pass through an electrolytic cell, it will discharge half a mole of a divalent metal ion. Based on this theory, Faraday devised his two laws of electrolysis which states that the respective weight of a substance formed at an electrode during the process of electrolysis is directly proportional to the quantum of electricity that can pass through that electrolyte and the weight of a variety of substances that will be formed by passing the same quantity of electricity shall be proportional to the respective weight of the given substances.