4.
依据题目要求回答下列问题:常温下,浓度为\(\rm{0.1}\)\(\rm{mol}\)\(\rm{/L}\)的下列五种溶液的\(\rm{p}\)\(\rm{H}\)如表:
溶质 | \(\rm{CH_{3}COON}\)\(\rm{a}\) | \(\rm{N}\)\(\rm{a}\)\(\rm{HCO_{3}}\) | \(\rm{N}\)\(\rm{a}\)\(\rm{{\,\!}_{2}CO_{3}}\) | \(\rm{N}\)\(\rm{a}\)\(\rm{C}\)\(\rm{l}\)\(\rm{O}\) | \(\rm{N}\)\(\rm{a}\)\(\rm{CN}\) |
\(\rm{p}\)\(\rm{H}\) | \(\rm{8.8}\) | \(\rm{9.7}\) | \(\rm{11.6}\) | \(\rm{10.3}\) | \(\rm{11.1}\) |
\(\rm{(1)}\)上述盐溶液中的阴离子,结合\(\rm{H^{+}}\)的能力最强的是______
\(\rm{(2)}\)根据上表数据,判断下列反应不能成立的是______
\(\rm{A.CH_{3}COOH+N}\)
\(\rm{a}\)\(\rm{{\,\!}_{2}CO_{3}═N}\)
\(\rm{a}\)\(\rm{HCO_{3}+CH_{3}COON}\)
\(\rm{a}\) \(\rm{B.CH_{3}COOH+N}\)
\(\rm{a}\)\(\rm{CN═CH_{3}COON}\)
\(\rm{a}\)\(\rm{+HCN}\)
\(\rm{C.CO_{2}+H_{2}O+N}\)
\(\rm{a}\)\(\rm{C}\)
\(\rm{l}\)\(\rm{O═N}\)
\(\rm{a}\)\(\rm{HCO_{3}+HC}\)
\(\rm{l}\)\(\rm{O}\)
\(\rm{D.CO_{2}+H_{2}O+2N}\)
\(\rm{a}\)\(\rm{C}\)
\(\rm{l}\)\(\rm{O═N}\)
\(\rm{a}\)\(\rm{{\,\!}_{2}CO_{3}+2HC}\)
\(\rm{l}\)\(\rm{O}\)
\(\rm{(3)N}\)\(\rm{a}\)\(\rm{{\,\!}_{2}CO_{3}}\)溶液的\(\rm{p}\)\(\rm{H=11.6}\)的原因是\(\rm{(}\)用离子方程式表示\(\rm{)}\):_____________________,溶液中各离子浓度由大到小的顺序为 ____________________________________________.
\(\rm{(4)}\)\(\rm{p}\)\(\rm{H=11}\)的\(\rm{N}\)\(\rm{a}\)\(\rm{OH}\)和\(\rm{N}\)\(\rm{a}\)\(\rm{CN}\)溶液中,由水电离出的\(\rm{c}\)\(\rm{(H^{+})}\)之比为______ .