Question

Place coefficients in the reactants and or products to balance the following chemical reactions.


1. Fe + S FeS

2. H2 + Cl2 HCl

3. Mg + O2 MgO

4. O2 + H2 H2O

5. HgO Hg + O2

6. Ca + H2O Ca(OH)2 + H2

7. CH4 + O2 CO2 + H2O

8. Na2O2 + H2(SO4) Na2(SO4) + H2O2

9. N2 + H2 NH3

10. Al + O2 Al2O3

11. KMnO4 K2O + MnO + O2

Answer 1

1. Is already balanced.
2.H2 + Cl2 yields 2HCl
3.2MG + O2 yields 2MgO
4.O2 + 2H2 yields 2H2O
5.2HgO yields 2Hg + O2
6.Ca + 2H2O yields Ca(OH)2 + H2
7.CH4 + 2O2 yields CO2 + 2H2O
8.is already balanced
9.N2 + 3H2 yields 2NH3
10.4Al + 3O2 yields 2Al2O3
11.4KMnO4 yields 2K2O + 4MnO + 5O2