Question

How to balance an equation with ion electron method ??? Give two examples too.

Answer 1

Explanation:

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