2.
\(\rm{(1)}\)已知\(\rm{25℃}\),\(\rm{101 kPa}\)时:\(\rm{4Fe(s)+3O_{2}(g)=2Fe_{2}O_{3}(s)}\)
\(\rm{Δ}\)\(\rm{H}\)\(\rm{=-1 648 kJ·mol^{-1}}\)
\(\rm{C(s)+O_{2}(g)=CO_{2}(g) Δ}\)\(\rm{H}\)\(\rm{=-393 kJ·mol^{-1}}\)
\(\rm{2Fe(s)+2C(s)+3O_{2}(g)=2FeCO_{3}(s) Δ}\)\(\rm{H}\)\(\rm{=-1 480 kJ·mol^{-1}}\)
\(\rm{FeCO_{3}}\)在空气中加热反应生成\(\rm{Fe_{2}O_{3}}\)的热化学方程式是________________________________________________________________________。
\(\rm{(2)}\)甲醇既是重要的化工原料,又可作为燃料,利用合成气\(\rm{(}\)主要成分为\(\rm{CO}\)、\(\rm{CO_{2}}\)和\(\rm{H_{2})}\)在催化剂作用下合成甲醇。发生的主要反应如下:
\(\rm{①CO(g)+2H_{2}(g)=CH_{3}OH(g) Δ}\)\(\rm{H}\)\(\rm{{\,\!}_{1}}\)
\(\rm{②CO_{2}(g)+3H_{2}(g)=CH_{3}OH(g)+H_{2}O(g) Δ}\)\(\rm{H}\)\(\rm{{\,\!}_{2}}\)
\(\rm{③CO_{2}(g)+H_{2}(g)=CO(g)+H_{2}O(g) Δ}\)\(\rm{H}\)\(\rm{{\,\!}_{3}}\)
回答下列问题:
由此计算\(\rm{Δ}\)\(\rm{H}\)\(\rm{{\,\!}_{1}=}\)________\(\rm{kJ·mol^{-1}}\);已知\(\rm{Δ}\)\(\rm{H}\)\(\rm{{\,\!}_{2}=-58 kJ·mol^{-1}}\),则\(\rm{Δ}\)\(\rm{H}\)\(\rm{{\,\!}_{3}=}\)________\(\rm{kJ·mol^{-1}}\)。