In a particular redox reaction, Cr is oxidized to CrO42– and Cu2 is reduced to Cu . Complete and balance the equation for this reaction in acidic solution. Phases are optional.

Cr + Cu2+ = CrO42- + Cu+

3 answers

What is your problem with this?
complete and balance the reaction in an acidic solution. I know the half reactions are
Cr = CrO4^2-
Cu^2+ = Cu^+
Here is a site that explains how to do it. Memorize the set procedure.
http://www.chemteam.info/Redox/Redox.html

Post any question you have about the procedure.