iron metal can be produced by reducing Fe(III) oxide with hydrogen Fe2O3(s) + 3H2 (g) ---- 2Fe(s) + 3H2O(g) delta H =98.8 Kj and delta S =141.5 J/K which is correct for above reaction (1) spontaneous above 298 K (2) spontaneous below 298 K (3) spontaneous below 698 K (4) spontaneous above 698 K