Chemistry

In the reaction: Cu(s) + 2 Ag+(aq) ---> Cu2+(aq) + 2 Ag(s, the oxidizing agent is ?

1.Cu
2.Cu2+
3.Ag+
4.Ag

i know its Ag but is it Ag+ or just Ag? what does that extra plus mean?

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  1. The extra plus means the ion. You could write the half reaction for the Ag this way.
    Ag(s) ==> Ag+ + e
    which means the Ag is losing an electron to become the silver +1 ion.

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