Types of Chemical Reactions {Examples}

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Combination reaction:-

1) 2Mg(s) + O2(g) → 2MgO

2) 2H2(g) + O2(g)→ 2H2O(l)

3) C(s) + O2 (g)→ CO2(g)

4) H2 (g) + Cl2 (g)→ 2HCl

5) 2Na + Cl2 → NaCl

6)Fe + S → FeS

7) CaO + H2O →Ca(OH)2

8) NH3 + HCl → NH4Cl

9) 2CO + O2 → 2CO2

10) 2SO2 + O2 →2 SO3

Double displacement:-

1) AgNO3 + NaCl → AgCl + NaNO3

2) BaCl2 + Na2SO4 → BaSO4 + 2NaCl

3) CuSO4 + H2S → CuS + H2SO4

4) AlCl3 + 3NH4OH → Al(OH)3 + 3NH4Cl

5) BaCl2 + CuSO4 → BaSO4 + CuCl2

6) NaOH + HCl → NaCl + H2O

7) Pb(NO3)2 + KI → PbI2 + 2KNO3

8) CuSO4 + 2NaOH → Cu(OH)2 + Na2SO4

9) CoCl2 + Na2CO3 → CoCO3 + 2NaCl

10) Pb(CH3COO)2 + 2HCl → PbCl2 +
2CH3COOH

Displacement reaction:-

1) CuSO4 + Zn → ZnSO4 + Cu

2) CuSO4 + Fe → FeSO4 + Cu

3) CuSO4 + Mg → MgSO4 + Cu

4) 2Na + 2H2O → 2NaOH+ H2

5) CuO + Mg → MgO + Cu

6) CuCl2 + Pb → PbCl2 + Cu

7) Fe2O3 + 2Al→ 2Fe + Al2O3

8) Fe + 2HCl → FeCl2 + H2

9) Cl2 + 2KI → 2KCl + I2

10) Mg +2HCl → MgCl2 + H2

Decomposition reaction:-

1) CaCO3 → CaO + CO2

2) 2Pb(NO3)2 → 2PbO + 4NO2 + O2

3) 2FeSO4 → Fe2O3 + SO2 + SO3

4) 2KClO3 → 2KCl +3O2

5) H2C2O4.H2O → H2C2O4 + H2O

6) 2AgCl → 2Ag + Cl2
(Photodecomposition reaction)

7) 2AgBr → 2Ag+ Br2
(photodecomposition reaction)

8) 2H2O2 →2H2O + O2. (In presence of light)

Inert gas (Ne, Ar) elements do not react with other elements.

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