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First of all combination reaction is the one in which two or more reactants combine to form a single product......
Such as:
CaO + H2O = Ca(OH)2
In this Calcium Oxide (lime) combines with Water to form Calcium Hydroxide (slaked lime)...
Na2O + H2O = 2NaOH
In this Sodium Oxide combines with Water to form Sodium Hydroxide...
4Li + O2 = 2Li2O
In this Lithium combines with Oxygen to form Lithium Oxide...
COMBINATION REACTION is just opposite to DECOMPOSITION REACTION in which one reactant breaks down to form simpler products, such as :
2FeSO4 = Fe2O3 + SO2 + SO3
In this Ferrous Sulphate decomposes to form Ferric Oxide, Sulphur Dioxide and Sulphur Trioxide....
Sidz
Some examples of combination reactions include reactions between two atoms, two compounds, and an atom and a compound. For instance water is formed from hydrogen and oxygen gas.
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