室温下,将一元酸\(\rm{HA}\)的溶液和\(\rm{KOH}\)溶液等体积混合\(\rm{(}\)忽略体积变化\(\rm{)}\),下列中和反应结论正确的是 ( )
选项 | 起始浓度\(\rm{/(mol·L^{-1})}\) | 反应后 溶液的\(\rm{pH}\) | 结论 |
\(\rm{c(HA)}\) | \(\rm{c(KOH)}\) |
\(\rm{A}\) | \(\rm{0.1}\) | \(\rm{0.1}\) | \(\rm{7}\) | \(\rm{HA}\)为弱酸 |
\(\rm{B}\) | \(\rm{0.1}\) | \(\rm{0.1}\) | \(\rm{9}\) | \(\rm{c(K^{+}) < c(A^{-})}\) |
\(\rm{C}\) | \(\rm{0.2}\) | \(\rm{0.1}\) | \(\rm{6}\) | \(\rm{HA}\)为强酸 |
\(\rm{D}\) | \(\rm{0.2}\) | \(\rm{0.1}\) | \(\rm{8}\) | \(\rm{c(A^{-}) < c(HA)}\) |