Question

How to balance redox reactions by ion electron method in simple way?

Answer 1

Step 1. Write down the unbalanced equation

Step 2. Separate the redox reaction into half-reactions

a) Assign oxidation numbers for each atom

b) Identify and write out all redox couples in reaction

c) Combine these redox couples into two half-reactions

Step 3. Balance the atoms in each half reaction

a) Balance all other atoms except H and O

b) Balance the oxygen atoms with H2O

c) Balance the hydrogen atoms with H+

d) In a basic medium, add one OH- to each side for every H+

Step 4. Balance the charge with e-

Step 5: Make electron gain equivalent to electron loss in the half-reactions

Step 6: Add the half-reactions together

Step 7: Simplify the equation

Finally, check that the elements and charges are balanced








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