常温下,向25 mL0.12 mol/L AgNO
3溶液中逐滴加入浓度为2%的氨水,先出现沉淀,继续滴加沉淀溶解。该过程中加入氨水的体积V与溶液中lg
![](https://math.21cnjy.com/MathMLToImage?mml=%3Cmath+xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F1998%2FMath%2FMathML%22%3E%3Cmfrac%3E%3Cmrow%3E%3Cmtext%3Ec%3C%2Fmtext%3E%3Cmrow%3E%3Cmo%3E%28%3C%2Fmo%3E%3Cmrow%3E%3Cmsup%3E%3Cmrow%3E%3Cmtext%3EH%3C%2Fmtext%3E%3C%2Fmrow%3E%3Cmrow%3E%3Cmo%3E%2B%3C%2Fmo%3E%3C%2Fmrow%3E%3C%2Fmsup%3E%3C%2Fmrow%3E%3Cmo%3E%29%3C%2Fmo%3E%3C%2Fmrow%3E%3C%2Fmrow%3E%3Cmrow%3E%3Cmtext%3Ec%3C%2Fmtext%3E%3Cmrow%3E%3Cmo%3E%28%3C%2Fmo%3E%3Cmrow%3E%3Cmtext%3EO%3C%2Fmtext%3E%3Cmsup%3E%3Cmrow%3E%3Cmtext%3EH%3C%2Fmtext%3E%3C%2Fmrow%3E%3Cmrow%3E%3Cmo%3E%E2%88%92%3C%2Fmo%3E%3C%2Fmrow%3E%3C%2Fmsup%3E%3C%2Fmrow%3E%3Cmo%3E%29%3C%2Fmo%3E%3C%2Fmrow%3E%3C%2Fmrow%3E%3C%2Fmfrac%3E%3C%2Fmath%3E)
的关系如图所示。已知e点时溶液迅速由浑浊变得澄清,且此时溶液中c(Ag
+)与c(NH
3)均约为2×10
-3 mol/L。下列叙述错误的是( )
![](http://tikupic.21cnjy.com/2023/03/02/cd/9a/cd9a7bf889388b3810b18eec1ab26cf2_260x196.png)
- A、a点溶液呈酸性的原因是AgNO3水解
- B、b点溶液中:c(Ag+)+c[Ag(NH3)2+]<c(NO3-)
- C、由e点可知,反应Ag++2NH3
[Ag(NH3)2]+平衡常数的数量级为105 - D、c~d段加入的氨水主要用于沉淀的生成和溶解