Question

Balance the following skeleton reactions and identify the oxidizing and reducing agents:(b) Mn²⁺(aq) + BiO₃⁻(aq) → MnO₄⁻(aq) + Bi³⁺(aq) [acidic]

Answer 1

The balanced skeleton reactions are given below

2Mn²⁺(aq) +5BiO₃⁻(aq) +  14$H^{+}$(aq)  →  2MnO₄⁻(aq) + 5Bi³⁺(aq) + 7$H_{2}O$(l)

The oxidising agent and  reducing agents are Bi and Mn.

There are following steps involve in balance redox reaction in acidic medium .

• First divide the reaction into two half reactions .
• Balance the elements other than oxygen and hydrogen atom.
• Balance the oxygen atom by adding $H_{2}O$ on that side where number of oxygen  atom is less .
• Balance the hydrogen atom by adding $H^{+}$ on another side of in which water attached .
• Balance the charge by adding $e^{-}$ .
• Add the two half reaction  .

The species which reduces the other species in the redox reaction is called oxidizing agent . Similarly , the species which oxidize the other species in the redox reaction  is called reducing agent .

To learn more about reducing agents please click here ,

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