The balanced overall reaction from these unbalanced half-reactions is given in following steps ,
Step 1 : [tex]Sn[/tex] → [tex]Sn^{+2}+ 2e^{-}[/tex]
Step 2 : [tex]Ag^{+}[/tex] + [tex]e^{-}[/tex] → [tex]Ag[/tex]
[tex]2Ag^{+} + 2e^{-}[/tex] → [tex]2Ag[/tex]
Overall reaction : [tex]Sn[/tex] + [tex]2Ag^{+}[/tex] → [tex]Sn^{+2}[/tex] + [tex]2Ag[/tex]
The equation in which number of atoms of elements in reactant side is equal to the number of atoms of elements in product side is called balanced chemical equation .
This step is oxidation half-reaction in which loss of electron is takes place .
Second steps is reduction reaction in which fain of electrons is takes place. We multiple second half-reaction by two to make equal number of electrons in both steps to cancel out the electrons from the equation.
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