In the reaction Cu + [tex]AgNO_3[/tex] → Ag +[tex]Cu(NO_3)_2[/tex] , copper (Cu) is reduced while silver (Ag) is the oxidizing agent.
In the given reaction, copper (Cu) undergoes reduction, meaning it gains electrons. The Cu atom in Cu reacts with [tex]AgNO_3[/tex] , resulting in the formation of Ag and [tex]Cu(NO_3)_2.[/tex]
The Cu atom loses two electrons to form [tex]Cu_2[/tex]+ ions, which then combine with nitrate ions ([tex]NO_3[/tex]-) to form [tex]Cu(NO_3)_2[/tex] .
This reduction process is represented by the half-reaction:
Cu → [tex]Cu_2[/tex]+ + 2e-.
On the other hand, silver (Ag) undergoes oxidation, which involves losing electrons. The Ag+ ions from AgNO3 gain one electron each to form Ag atoms. This oxidation process is represented by the half-reaction: Ag+ + e- → Ag.
Therefore, in the reaction Cu + AgNO3 → Ag + Cu(NO3)2, copper (Cu) is reduced, and silver (Ag) acts as the oxidizing agent, facilitating the oxidation of Cu.
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