posted by Alexis .
In the reaction: Cu(s) + 2 Ag+(aq) ---> Cu2+(aq) + 2 Ag(s, the oxidizing agent is ?
i know its Ag but is it Ag+ or just Ag? what does that extra plus mean?
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.