已知:联氢(N
2H
4)是二元弱碱(pK
b1=6,pK
b2=15;pK=-lgK),在水中的电离方式类似于氨气,常温下,向0.1mol·L
-1N
2H
5Cl溶液通入HCl或加入NaOH固体(假设溶液总体积不变),溶液中c(N
2H
![](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%3E5%3C%2Fmn%3E%3C%2Fmrow%3E%3Cmrow%3E%3Cmo%3E%2B%3C%2Fmo%3E%3C%2Fmrow%3E%3C%2Fmsubsup%3E%3C%2Fmath%3E)
)随pOH变化的曲线如图所示,下列说法不正确的是( )
![](http://tikupic.21cnjy.com/2022/03/29/5f/bb/5fbbb814f8eabb67056b4b5516e4c7bf_366x285.png)
- A、N2H5Cl溶液c(N2H
)>c(N2H4)>c(N2H
) - B、b点加入NaOH(或HCl)的物质的量与d点加入HCl(或NaOH)物质的量相等
- C、水的电离程度:b>a
- D、若c(N2H
)>c(N2H4),则pH小于3.5