Question

I want 10 examples of combination reactions

Answer 1

Na2 + H2O `->` 2NaOH

Here sodium oxide is combined with water gives sodium hydroxide.

2. 4Li + O2 `->` 2Li2O

Here lithium is combined with oxygen to form lithium oxide.

3. 2Mg + O2 `->` 2 MgO

Here magnesium is combined with oxygen to form magnesium oxide.

4. H2 + Cl2 `->` 2 HCL

Here hydrogen is combined with chlorine to form hydrochloride.

5. NH3 + HCl `->` NH4Cl

Here colorless ammonia is added to colorless hydrogen chloride gives ammonia  chloride.

6. 2H2 + O2 `->` 2 H2O

Here hydrogen is burned in the air or oxygen produces water.

7. S + O2 `->` SO2

Here sulphur is burned in the air to produce sulphur dioxide.

8. Ba + F2 `->` Ba F2

Here barium metal and fluorine gas is combined to produce salt barium fluoride which is highly exothermic reaction.

9. MgO + CO2 `->` MgCO3

Here magnesium oxide is combined with carbon to produce magnesium carbon dioxide.

10. 2Al + 3Br `->` 2AlBr3

Here aluminum is combined with bromine which produces 3 + aluminum iron and 1+bromine iron.

Answer 2

Following are the  examples of combination reactions :-

Explanation.

1.Here sodium oxide is combined with water to give sodium hydroxide.

$Na2 + H2O------ 2NaOH$

2.When lithium is combined with oxygen to form lithium oxide.

$4Li + O2---- 2Li2O$

3.When magnesium is combined with oxygen to form magnesium oxide.

$2Mg + O2 ---- 2 MgO$

4.When hydrogen is combined with chlorine to form hydrochloride.

$H2 + Cl2 ---- 2 HCL$

5.When colorless ammonia is added to colorless hydrogen chloride it gives ammonia chloride.

$NH3 + HCl---- NH4Cl$

6. When hydrogen is burned in the air or oxygen produces water.

$2H2 + O2--- 2 H2O$

7. When sulphur is burned in the air it produces sulphur dioxide.

$S + O2 --- SO2$

8. When barium metal and fluorine gas react together to produce salt barium fluoride which is a highly exothermic reaction.

$Ba + F2 --- Ba F2$

9. When magnesium oxide reacts with carbon dioxide to produce magnesium carbonate..

$MgO + CO2---- MgCO3$

10. When aluminum is combined with bromine it produces 3  aluminum ions and 1 bromine ion.it forms Aluminium bromide.

$2Al + 3Br ---2AlBr3$

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