The black silver sulfide discoloration of silverware can easily be removed by heating the silver article in a sodium carbonate solution in an aluminum pan. The reaction is 3 Ag2S(s) + 2 Al(s) 6 Ag(s) + 3 S2-(aq) + 2 Al3+(aq) (a) Using data in the Appendix, calculate ?G°, K for the above reaction. [For Al3+(aq), ?G°f =?480 kJ/mol.] I got -582 KJ as delta G but I can't seem to find what K is.