What is redox reaction?
Answers
Explanation:
Redox is a type of chemical reaction
in which the oxidation states of
atoms are changed.
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A redox reaction can be defined as a chemical reaction in which electrons are transferred between two reactants participating in it. This transfer of electrons can be identified by observing the changes in the oxidation states of the reacting species.
An illustration detailing the electron transfer between two reactants in a redox reaction is provided below.
In the illustration provided above, it can be observed that the reactant, an electron, was removed from the reactant A, and this reactant is oxidized. Similarly, reactant B was handed an electron and was therefore reduced.
The loss of electrons and the corresponding increase in the oxidation state of a given reactant is called oxidation. The gain of electrons and the corresponding decrease in the oxidation state of a reactant is called reduction.
Electron-accepting species which tend to undergo a reduction in redox reactions are called oxidizing agents. An electron-donating species which tends to hand over electrons can be referred to as a reducing agent. These species tend to undergo oxidation. It can be noted that any redox reaction can be broken down into two half-reactions, namely the oxidation half-reaction and the reduction half-reaction.
When writing these half-reactions separately, each of them must be balanced in a way that all the electrons are accounted for.
