For the decomposition of mercury(II) oxide, HgO, to mercury…

For the decomposition of mercury(II) oxide, HgO, to mercury and oxygen:                                                2HgO(s)2Hg(l) + O2(g)               ΔGo = 117.1 kJWhat is the standard Gibbs free energy of formation (ΔGfo) of mercury(II) oxide?   Periodic Table and Datasheet

For the reduction of silver with hydrogen:                  …

For the reduction of silver with hydrogen:                                2Ag+(aq) + H2(g)2H+(aq) + 2Ag(s)Given the thermodynamic data in the table, what is the standard change in Gibbs free energy for this reaction at 298 K?    Δ H f o / kJ∙mol –1 S o / J∙mol –1 ∙K –1 Ag + (aq) 105.58 72.68 Ag(s) 0 42.55 H 2 (g) 0 130.68 H + (aq) 0 0       Periodic Table and Datasheet