8.
已知\(\rm{2SO_{2}}\) \(\rm{(g)+O_{2}}\) \(\rm{(g)⇌2SO_{3}}\) \(\rm{(g)}\);\(\rm{\triangle H=-197kJ⋅mol^{-1}.}\)向同温、同体积的三个密闭容器中分别充入气体:\(\rm{(}\)甲\(\rm{)}\) \(\rm{2mol}\) \(\rm{SO_{2}}\)和\(\rm{1mol}\) \(\rm{O_{2}}\);\(\rm{(}\)乙\(\rm{)}\) \(\rm{1mol}\) \(\rm{SO_{2}}\)和\(\rm{0.5mol}\) \(\rm{O_{2}}\);\(\rm{(}\)丙\(\rm{)}\) \(\rm{2mol}\) \(\rm{SO_{3}.}\)恒温、恒容下反应达平衡时,下列关系一定正确的是\(\rm{(}\) \(\rm{)}\)