Question

Balance the following skeleton reactions and identify the oxidizing and reducing agents:(c) AsO₄³⁻(aq) + NO₂⁻(aq) → AsO₂⁻(aq) + NO₃⁻(aq) [basic]

Answer 1

The balanced skeleton reactions are given below

AsO₄³⁻(aq) + 2NO₂⁻(aq)  + 2$H_{2} O$(l) →  AsO₂⁻(aq) + 2NO₃⁻(aq) + 2$OH^{-}$(aq)

The oxidizing agent and  reducing agents are As and  N .

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

• Divide the reaction into two half reactions .

• Balance the elements other than oxygen and hydrogen .

• Balance the oxygen atom by adding $H_{2} O$ .

• Balance the hydrogen atom by adding $H^{+}$ .

• Add  $OH^{-}$ ions to both sides to neutralize $H^{+}$

• Combine $OH^{-}$  and $H^{+}$ to make  $H_{2} O$  .

• Balance the charge by adding $e^{-}$ .

• Add the half reaction and simply .

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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