For the following reaction : K=1.7×107  at 250C Ag(aq)++2NH3(aq)⇌[Ag(NH3)2]⊕  then ΔG0  in KJ  is

ΔG0=−2.303  RT  logKc =−2.303×8.314×10−3×298×log(1.7×107)KJ/mole =−2.030×8.314×0.298×7.2304   KJ/mole =−41.25    KJ/mole