20.3 Balancing Redox Reactions

20.3 Balancing Redox Reactions

By Lan Vu

Multiple Choice

Balance this equation:

H₂ + Cl₂ ---> HCl

• It is balanced.

• H₂ + Cl₂ ---> 2HCl

• 3H₂ + Cl₂ ---> 6HCl

• H₂ + 3Cl₂ ---> 6HCl

​Balancing RedOx using 1/2 Reaction Method in Acidic Solution

1. ​Write the oxidation and reduction half reaction

2. Balance all elements that is not O and H

3. Balance O using H₂O on the other side

4. Balance H​ by adding H⁺ to the other side

5. Balance the number of electrons from the oxidation and reduction step

6. Cancel ​