Explain the types of reaction with reference to oxygen and hydrogen.Illustrate with example

Explanation

1. The types ofreaction with reference to oxygen and hydrogen are oxidation and reduction reactions.
ii. The chemical reaction in which a reactant combines with oxygen or loses hydrogen to form the product is called oxidation reaction.
iii. Examples: `2Mg +O_2 overset(Delta)rarr 2MgO`
Mg combines with oxygen to form MgO.
Here,Mg undergoes oxidation.
b. `MgH_2 rarr Mg+H_2 uarr`
`MgH_2` loses hydrogen to form Mg. Here,
`MgH_2` undergoes oxidation.
iv. The chemical reaction in which a reactant gains hydrogen or loses oxygen to form the product is called reduction reaction.