Question

write a note on redox reaction..​

Answer 1

An oxidation-reduction reaction is any chemical reaction in which the oxidation number of a molecule, atom, or ion changes by gaining or losing an electron. The formation of hydrogen fluoride is an example of a redox reaction. We can break the reaction down to analyze the oxidation and reduction of reactants.

OR

An oxidation-reduction (redox) reaction is a type of chemical reaction that involves a transfer of electrons between two species. An oxidation-reduction reaction is any chemical reaction in which the oxidation number of a molecule, atom, or ion changes by gaining or losing an electron.

The formation of hydrogen fluoride is an example of a redox reaction. We can break the reaction down to analyze the oxidation and reduction of reactants. The hydrogen is oxidized and loses two electrons, so each hydrogen becomes positive.

H 2+2F→2H

Answer 2

Redox reaction is a reduction-oxidation reaction.

Explanation:

• Redox reaction can be defined as the reduction-oxidation reaction where there is change in oxidation number involved.

• Reduction and oxidation is a simultaneous process here.

• Oxidizing agent is the substance that gets reduced. These are electron-accepting species.

• Reducing agent is the substance that gets oxidized. These are electron-donating species.

• Redox chemical reaction occurs by exchange of electrons and this is observed with the help of change in oxidation number.

• In oxidation process, there is loss of electrons and oxidation state increases.

• In reduction process, there is gain of electrons and oxidation state decreases.

Example:

Reaction between hydrogen and fluorine is a redox reaction.

$H_{2} +F_{2}$ → $2HF$

Here, hydrogen is oxidized whereas fluorine is reduced.