A.\(\rm{0.1 mol·L^{-1}NaHC_{2}O_{4}}\)溶液\(\rm{(pH=5.5)}\):\(\rm{c(Na^{+}) > c(HC_{2}O\rlap{_{4}}{^{-}}) > c(H_{2}C_{2}O_{4}) > c(C_{2}O\rlap{_{4}}{^{2-}})}\) |
B.\(\rm{0.1 mol·L^{-1}NaHS}\)溶液:\(\rm{c(OH^{-})+c(S^{2-})=c(H^{+})+c(H_{2}S)}\) |
C.\(\rm{0.1 mol·L^{-1} NH_{4}HSO_{4}}\)溶液中滴加\(\rm{0.1 mol·L^{-1} NaOH}\)溶液至中性:\(\rm{c(Na}\)\(\rm{{\,\!}^{+}}\)\(\rm{) > c(SO}\)\(\rm{\rlap{_{4}}{^{2-}}}\)\(\rm{) > c(NH}\)\(\rm{\rlap{_{4}}{^{+}}}\)\(\rm{) > c(OH}\)\(\rm{{\,\!}^{-}}\)\(\rm{)=c(H}\)\(\rm{{\,\!}^{+}}\)\(\rm{)}\) |
D.\(\rm{0.1 mol·L^{-1}CH_{3}COOH}\)溶液和\(\rm{0.1 mol·L^{-1}CH_{3}COONa}\)溶液等体积混合:\(\rm{c(Na}\)\(\rm{{\,\!}^{+}}\)\(\rm{) > c(CH}\)\(\rm{{\,\!}_{3}}\)\(\rm{COOH) > c(CH}\)\(\rm{{\,\!}_{3}}\)\(\rm{COO}\)\(\rm{{\,\!}^{-}}\)\(\rm{) > c(H}\)\(\rm{{\,\!}^{+}}\)\(\rm{) > c(OH}\)\(\rm{{\,\!}^{-}}\)\(\rm{)}\) |