Question

Balance the following equations and also write the type of reaction.
1. Mg + O2MgO
2. Fe2O3 + Al  Al2O3 + Fe
3. C2H6 +O2  CO2 +H2O
4. H2O2 H2 + O2
5. P + Cl2  PCl3
6. BaCl2 + Al2(SO4)3 AlCl3 + BaSO4
7. Zn + HCl ZnCl2 + H2
8. PbO + C Pb + CO2
9. Pb(NO3)2 + KI  PbI2 + KNO3
10. KClO3KCl + O2.

Answer 1

1- 1/2O2
2-2Al,2Fe
3- 5/2O2,2CO2,3H2O
5-3/2Cl2
7-2HCl
8-2PbO,2Pb
9-2KI,2KNO3
10-3/2O2

Answer 2

2Mg+O2>2Mgo. Combination reaction
Fe2O3+2Al>Al2O3+2Fe. Displacement reaction
C2H6+2O2>2CO2+3H2. Combustion reaction
H2O2>H2+O2(already balanced). Decomposition reaction
2P+3Cl2>2PCl3. Combination reaction
3BaCl2+Al2(SO4)3>2AlCl3+3BaSO4. Double decomposition reaction
Zn+2HCl>ZnCl2+H2. Displacement reaction
2PbO+C>2Pb+CO2. Displacement reaction
Pb(NO3)2+2KI>PbI2+2KNO3. Double decomposition reaction
2KClO3>2KCl+3O2. Decomposition reaction