Question

Give 5 examples of combination reactions in which element and compound combine to form a single substance.​

Answer 1

1. barium metal and fluorine gas will combine in a highly exothermic reaction to form the salt barium fluoride:

Ba + F2 → BaF2

2. magnesium oxide combining with carbon dioxide to produce magnesium carbonate.

MgO + CO2 → MgCO3

3. iron combining with sulfur to produce iron(II) sulfide.

Fe + S → FeS

Answer 2

Answer:

Examples for combination reaction:

Na2 + H2O `->` 2NaOH. Here sodium oxide is combinedwith water gives sodium hydroxide.

4Li + O2 `->` 2Li2O. Here lithium is combinedwith oxygen to form lithium oxide.

2Mg + O2 `->` 2 MgO. ...

H2 + Cl2 `->` 2 HCL. ...

NH3 + HCl `->` NH4Cl. ...

2H2 + O2 `->` 2 H2O. ...

S + O2 `->` SO2. ...

Ba + F2 `->` Ba F2.