Question

How to balance redox reactions by ion electron method?

Answer 1

Answer:

Explanation:

The reaction in which oxidation state of atoms is changed.

Answer 2

ANSWER:

Balancing redox reaction by ion electron method (basic medium)-

Ex.1-

I2 + OH–    ———–> I–   + IO3–  + H2O

I2  ————–> 2I–  (Reduction)

I2    ————> 2 IO3–  ( Oxidation )

To balance reduction half reaction-

I2  + 2e–  ———->  2I–              ——eq.1

To balance oxidation half reaction –

To balance oxygen,

I2  + 12OH–    ———-> 2 IO3 –

To balance hydrogen ,

I2  + 12OH–  ———> 2IO3– +  6 H2O

To balance charge ,

I2  + 12 OH–   ———-> 2 IO3–  + 6 H2O + 10 e–          ——-eq (2)

Multiply eq(1) by 5 & add both the equations-

5I2 + 10 e–  ———->    10 I–

6 I2 + 12 OH–  ———-> 10 I– + 2IO3–  + 6 H2O    

                                          ( Balanced equation)

EXPLANATION:

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