\(\rm{Na_{2}SO_{3}}\)溶液做为吸收液吸收\(\rm{SO_{2}}\)时,吸收液\(\rm{pH}\)随\(\rm{n(SO_{3}^{2-})}\):\(\rm{n(HSO_{3}^{-})}\)变化的关系如表:
\(\rm{n(SO_{3}^{2-})}\):\(\rm{n(HSO_{3}^{-})}\) | \(\rm{91}\):\(\rm{9}\) | \(\rm{1}\):\(\rm{1}\) | \(\rm{9}\):\(\rm{91}\) |
\(\rm{pH}\) | \(\rm{8.2}\) | \(\rm{7.2}\) | \(\rm{6.2}\) |
以下离子浓度关系的判断正确的是\(\rm{(}\) \(\rm{)}\)