常温下,向0.1mol•L
-1的乙二胺(H
2NCH
2CH
2NH
2)溶液中不断通入HCl气体,溶液中三种含氮微粒的物质的量分数δ与pOH的关系图如图。已知:①乙二胺为无色液体,有类似氨的性质,常温下K
b1=10
-4.07 , K
b2=10
-7.15;②假设溶液体积保持不变。下列说法中
错误的是{已知:pOH=-lgc(OH
-)}( )
![](http://tikupic.21cnjy.com/2022/10/28/da/a6/daa69a90f41e468c889854ed2533731f_416x305.png)
- A、曲线Ⅱ代表的微粒符号为H2NCH2CH2NH
![](https://math.21cnjy.com/MathMLToImage?mml=%3Cmath+xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F1998%2FMath%2FMathML%22%3E%3Cmsubsup%3E%3Cmrow%3E%3C%2Fmrow%3E%3Cmrow%3E%3Cmn%3E3%3C%2Fmn%3E%3C%2Fmrow%3E%3Cmrow%3E%3Cmo%3E%2B%3C%2Fmo%3E%3C%2Fmrow%3E%3C%2Fmsubsup%3E%3C%2Fmath%3E)
- B、b点的对应pOH=5.61
- C、pOH=a时,c(Cl-)>0.05mol•L-1
- D、在0.1mol•L-1H2NCH2CH2NH3Cl溶液中:c([H2NCH2CH2NH3]+)>c([H3NCH2CH2NH3]2+)>c(H2NCH2CH2NH2)