For a particular redox reaction SO3 2- is oxidized to SO4 2- and Cu 2+ is reduced to Cu + . What would the complete and balance equation for this reaction in basic solution?

##SO_3^(2-) + Cu^(2+)+ 2HO^(-) rarr SO_4^(2-) +Cu(s) + H_2O(l)##

When basic conditions are specified, it is normally best to balance the equations in acid, and then modify the final equations.

##"Sulfur (IV+)"## ##rarr## ##"Sulfur(VI+)":##

##SO_3^(2-) + H_2Orarr SO_4^(2-) +2H^(+) + 2e^(-) ##

For basic conditions, add ##2xxHO^-## to EACH side ##(HO^(-) + H^(+)rarrH_2O)##:

##SO_3^(2-) + 2HO^(-) rarr SO_4^(2-) +H_2O + 2e^(-) ##

##"Copper (II+)"## ##rarr## ##"Copper (0)":##

##Cu^(2+) + 2e^(-) rarr Cu##

You have asked another such question recently. Do you follow the method of doing redox equations?