Question

Holiday Assignment for Std - X
CHEMISTRY
Balance the following equation. And also mention the types of
reaction mentioning the states of Reactants and products. Name the
reactants and products,
1. Fe2O3 + Al ► Fe + AlO3 + heat
9. K+ H2O → KOH + H2 + Heat
10. Ca + H2O → Ca (OH)2+ H2
11. Al + H2O → Al2O3 + H2
12. Fe + H2O → Fe3O4 + H2
13. Na + H2O + NaOH + H2 + Heat
14. Cu + O2 → CuO
15. AI + O2 + Al2O3
16. Al2O3 + HCI AICI: + H2O
17. Na2O + H2O → NaOH
18. K2O + H2O → KOH
20. NaCl + H2O + CO2 + NH3 + NH4Cl + NaHCO3
​

Answer 1

Answer:

In the reaction Mg + O2 → MgO, the number of atoms of each element on either side of the arrow is not equal. Therefore, this is an unbalanced chemical equation. Then what is a balanced equation? Let’s find out below and learn how to balance a chemical equation.