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The five main types of redox reactions are: In a combination reaction, two compounds are combined to give a product. In a decomposition reaction, the breakdown of the reactant occurs to give different products. An atom or ion gets displaced by another element in a displacement reaction.

The oxidation-reduction reaction is also known as the redox reaction. MnO_2 + 4HCl → MnCl_2 + 2H_2O + Cl_2. In ZnO with C, reaction carbon is oxidised to CO and ZnO is reduced to Zn. In MnO_2 with 4HCl, reaction HCl is oxidised to Cl_2 whereas MnO_2 is reduced to MnCl_2.

Some common redox reactions include fire, rusting of metals, browning of fruit, and photosynthesis. In simpler terms, redox reactions involve the transfer of electrons from one substance to another.

IUPAC gives several different definitions of oxidation: loss of electrons, increase in oxidation state, loss of hydrogen, or gain of oxygen.

A classic example of reduction is rusting: it is when oxygen reacts with iron to form rust. In this reaction, oxygen is reduced as it accepts electrons from the iron; the acceptance of electrons by oxygen is called reduction, while the iron losing electrons is called oxidation.

Oxidation reaction: The reaction in which oxygen is gained or hydrogen is lost, is called oxidation reaction. e.g. 2Cu+O2heat 2CuO. Reduction reaction. The reaction in which hydrogen is gained or oxygen is lost, is called reduction reaction. e.g., CuO+H2heat Cu+H2O.

Oxidation: It is defined as the addition of oxygen to the substance or the removal of hydrogen from the substance. In electronic terms loss of electrons is called oxidation. For example; C ( s ) + O 2 ( g ) → CO 2 ( g ) Carbon Oxygen Carbon dioxide.

A reduction reaction is a chemical reaction in which oxygen is removed or hydrogen is added to an element, molecule, or compound.

As a result, an atom/ion is either oxidized or reduced. There are four types of redox reaction displacement,decomposition,combination and disproportionation reaction. The charge denotes the number of electrons that the atom/ion has in comparison to the neutral atom.