Redox reaction is also known as oxidation-reduction reaction. This means that in redox reaction both oxidation and reduction takes place. The basic mechanism behind redox reaction is the transfer of electron. The species which gives electron is said to be oxidized and the species which takes electron is reduced. The species which is oxidized is called reducing agent and the species reduced is called oxidizing agent. The example of redox reaction is formation of hydrogen fluoride.
Reaction: H2 + F2 = 2HF
Substance oxidized: Hydrogen
Substance reduced: Fluorine
Oxidation Reaction: H2 → 2H+ + 2e-
Reduction Reaction: F2 + 2e- → 2F-
Final Equation
H2 → 2H+ + 2e- + F2 + 2e- → 2F- = H2 + F2 = 2H+ + 2F-
H2 + F2 → 2H+ + 2F-→ 2HF
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