Question

Are these equations balanced? Why or why not?

1. 2 H2 + 2 NO → 2 H2O + N2

2. 2 CO + O2 → CO2

3. KClO3 → 2 KCl + 3 O2

Answer 1

Explanation:

Equation 1 is balanced as the number of atoms for all the elements is equal in product and reactants.

Equation 2 isn't balanced

= 2 CO2 + O2 - (gives) - 2 CO2

equation 3 is also not balanced

= 2 KClO3 - ( gives) - 2KCl + 3 O2