Question

已知下列热化学方程式

19、已知下列热化学方程式：Fe2O3(s) + 3CO(g) = 2Fe(s) + 3CO2(g) =－25KJ·mol-13Fe2O3(s) + CO(g) = 2Fe3O4(s) + 3CO2(g) =－47KJ·mol-1Fe3O4(s) + CO(g) = 3FeO(s) + CO2(g) =19KJ·mol-1不用查表，计算下列反应的热效应 FeO(s) + CO(g) = Fe(s) + CO2(g)

Answer 1

用盖斯定律(1*3-2-3*2)/6=(-25)*3-(-47)-19*2/6=-11KJ·mol-1

Answer 2

FeO(s) + CO(g) = Fe(s) + CO2(g) =-11KJ·mol-1

Answer 3

-2*19+(-47)+3*(-25)=-160kj/mol