常温下,某同学将盐酸与氨水等体积混合,两种溶液的浓度和混合后所得溶液的\(\rm{pH}\)如表.
实验编号 | 氨水浓度\(\rm{/mol⋅L^{-1}}\) | 盐酸浓度\(\rm{/mol⋅L^{-1}}\) | 混合溶液\(\rm{pH}\) |
\(\rm{①}\) | \(\rm{0.1}\) | \(\rm{0.1}\) | \(\rm{pH=5}\) |
\(\rm{②}\) | \(\rm{c}\) | \(\rm{0.2}\) | \(\rm{pH=7}\) |
\(\rm{③}\) | \(\rm{0.2}\) | \(\rm{0.1}\) | \(\rm{pH > 7}\) |
请回答:
\(\rm{(1)①}\)中所得混合溶液,由水电离出的\(\rm{c(H^{+})=}\) ______ \(\rm{mol⋅L^{-1}}\).
\(\rm{(2)②}\)中,\(\rm{c}\) ______ \(\rm{0.2(}\)填“\(\rm{ > }\)”“\(\rm{ < }\)”或“\(\rm{=}\)”\(\rm{)}\).
\(\rm{(3)③}\)中所得混合溶液,各离子浓度由大到小的顺序是 ______ .
\(\rm{(4)①}\)、\(\rm{③}\)所用氨水中的\(\rm{ \dfrac {c(N H_{ 4 }^{ + })}{c(NH_{3}\cdot H_{2}O)}}\):\(\rm{①}\) ______ \(\rm{③(}\)填“\(\rm{ > }\)”“\(\rm{ < }\)”或“\(\rm{=}\)”\(\rm{)}\).