Question

give me simple ex.of a combination reactions ​

Answer 1

A combination reaction is one in which two or more reactants combine to form a single product.
Examples:
Formation of calcium oxide by the combination elements calcium and oxygen.
2Ca + O2 → 2CaO

Formation of ammonia by the combination of elements nitrogen and hydrogen.
N2 + 3H2 → 2NH3

Reaction of calcium oxide in water to form calcium hydroxide
CaO + H2O → Ca(OH)2

Formation of sulphur trioxide by the combination of sulphur dioxide and oxygen.
2SO2 + O2 → 2SO3

Answer 2

Combination reaction : when 2 or more reactant combines to form a single product is combination reaction.

General formula: a + b = ab

Ex: 1.CaO + H20----> Ca(OH)2.

2. H2 + Cl2----> 2HCl.

3. 2Ca + O2----> 2Ca0

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