Answer: Balanced equation that is formed by combining these two half reactions is [tex]Cu + NO^{-}_{3} + 2H^{+} \rightarrow Cu^{2+} + NO^{-}_{2} + H_{2}O[/tex].
Explanation:
A chemical equation which contains same number of atoms on both reactant and product side is called a balanced chemical equation.
For example, [tex]Cu \rightarrow Cu^{2+} + 2e^{-}[/tex]
[tex]NO^{-}_{3} + 2e^{-} + 2H^{+} \rightarrow NO^{-}_{2} + H_{2}O[/tex]
On cancelling the common species from both these half-reactions, the complete balanced equation will be as follows.
[tex]Cu + NO^{-}_{3} + 2H^{+} \rightarrow Cu^{2+} + NO^{-}_{2} + H_{2}O[/tex]
Thus, we can conclude that balanced equation that is formed by combining these two half reactions is [tex]Cu + NO^{-}_{3} + 2H^{+} \rightarrow Cu^{2+} + NO^{-}_{2} + H_{2}O[/tex].
