3.
在\(\rm{1200℃}\)时,天然气脱硫工艺中会发生下列反应:
\(\rm{H_{2}S(g) + 3/2O_{2}(g) ══ SO_{2}(g) + H_{2}O(g)}\) \(\rm{\triangle H_{1}}\)
\(\rm{2H_{2}S(g) + SO_{2}(g) ══ 3/2S_{2}(g) + 2H_{2}O(g)}\) \(\rm{\triangle H_{2}}\)
\(\rm{H_{2}S(g) +1/2O_{2}(g) ══ S(g) + H_{2}O(g)}\) \(\rm{\triangle H_{3}}\)
\(\rm{2S(g) ══ S_{2}(g)}\) \(\rm{\triangle H_{4}}\) ,则\(\rm{\triangle H_{4}}\)的正确表达式为 \(\rm{(}\) \(\rm{)}\)