Respuesta :
The balanced skeleton reactions are given below
Cr₂O₇²⁻(aq) +3Zn(s) + 14[tex]H^{+}[/tex](aq) → 3Zn²⁺(aq) +2 Cr³⁺(aq) + 7[tex]H_{2}O[/tex](l)
The oxidising agent and reducing agents are Cr₂O₇²⁻ and Zn.
The following are involved in an acidic medium's balancing redox reaction .
- The reaction should first be split into two half reactions
- Balance the atoms present in half reaction other than oxygen and hydrogen atoms .
- Add [tex]H_{2}O[/tex] on that side where number of oxygen atom is less to balance the oxygen atom .
- Add [tex]H^{+}[/tex] on another side of in which water attached to make the hydrogen atom equal.
- Balance the charge by adding [tex]e^{-}[/tex] .
- Now , add the two half reactions .
The species which reduces the other species in the redox reaction is called reducing agent . Similarly , the species which oxidize the other species in the redox reaction is called reducing agent .
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