Question

dentify the oxidized substance, the reduced substance, the oxidizing agent, and the reducing agent in the redox reaction. Cu ( s ) + 2 AgNO 3 ( aq ) ⟶ 2 Ag ( s ) + Cu ( NO 3 ) 2 ( aq )

Answer 1

Answer :
`AgNO_3` act as oxidizing agent and Cu act as an reducing agent.

Explanation :

Redox reaction or Oxidation-reduction reaction : It is defined as the reaction in which the oxidation and reduction reaction takes place simultaneously.

Oxidation reaction : It is defined as the reaction in which a substance looses its electrons. In this, oxidation state of an element increases. Or we can say that in oxidation, the loss of electrons takes place.

Reduction reaction : It is defined as the reaction in which a substance gains electrons. In this, oxidation state of an element decreases. Or we can say that in reduction, the gain of electrons takes place.

Reducing agent : It is defined as the agent which helps the other substance to reduce and itself gets oxidized. Thus, it will undergo oxidation reaction.

Oxidizing agent : It is defined as the agent which helps the other substance to oxidize and itself gets reduced. Thus, it will undergo reduction reaction.

The given chemical reaction is,

`Cu(s)+2AgNO_3(aq)\rightarrow Ag(s)+Cu(NO_3)_2(aq)`

In this reaction, Cu shows oxidation reaction because oxidation state changes from (0) to (+2) and Ag shows reduction reaction because oxidation state changes from (+2) to (0).

The oxidation-reduction half reaction will be :

Oxidation :
`Cu\rightarrow Cu^(2+)`

Reduction :
`Ag^(+1)\rightarrow Ag`

In this reaction,
`AgNO_3` act as oxidizing agent and Cu act as an reducing agent.