Answer :
Answer:
The balanced half reaction in an acidic medium is :
[tex]VO^{2+}(aq)+2H^+(aq)+e^-\rightarrow V^{3+}(aq)+H_2O(l)[/tex]
Explanation:
[tex]VO^{2+}(aq)\rightarrow V^{3+}(aq)[/tex]
While balancing the half-reaction in an acidic medium, we will first balance oxygen atoms by adding water:
1) Adding 1 water molecule on product side to balance oxygen atoms.
[tex]VO^{2+}(aq)\rightarrow V^{3+}(aq)+H_2O(l)[/tex]
Now balance hydrogen atom by adding [tex]H^+ ions [/tex].
2) Adding 2 hydrogen ions on reactant side to balance hydrogen atoms.
[tex]VO^{2+}(aq)+2H^+(aq)\rightarrow V^{3+}(aq)+H_2O(l)[/tex]
Now balance the charge adding electrons on the side where positive charge is mor.
3) Adding 1 electrons on reactant side to balance charge of the overall reaction:
[tex]VO^{2+}(aq)+2H^+(aq)+e^-\rightarrow V^{3+}(aq)+H_2O(l)[/tex]
The balanced half reaction in an acidic medium is :
[tex]VO^{2+}(aq)+2H^+(aq)+e^-\rightarrow V^{3+}(aq)+H_2O(l)[/tex]