Question

1) Precipitation reaction- give example. 2) Exothermic reaction- give example. 3) Oxidation reaction- give example.
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Answer 1

Answer:

1-Precipitation reaction example,

AgNO3(aqueous) + KCl(aqueous) —–AgCl(precipitate) + KNO3(aqueous)

2-Exothermic reaction examples

4Fe + 3O2 → 2Fe2O3 ΔH⚬ = - 1648 kJ/mol

3-Oxidation reaction example

2H2g + O2g --------> 2H2O(l)