已知下列反應(yīng)在一定溫度下的熱效應(yīng): 則可計算出Fe3O4(s)的標(biāo)準(zhǔn)摩爾生成焓等于()
A.C(金剛石)+ O2(g)= CO2(g) B.C(石墨)+O2(g)= CO2(g) C.CO(g)+1/2O2(g)= CO2(g) D.CO2(g)=CO(g)+1/2O2(g)