已知Ka(CH
3COOH)=1.7×10
−5 ,K
b(NH
3·H
2O)=1.7×10
−5。常温下,用0.01mol·L
−1氨水滴定20 mL浓度均为 0.01 mol·L
−1的HCl和CH
3COOH混合溶液,相对导电能力随加入氨水体积变化曲线如图所示。下列叙述错误的是( )
- A、a点的混合溶液中c(CH3COO−)约为1.7×10−5mol·L−1
- B、b点的混合溶液中:c(CH3COOH) >c(NH4+)
- C、c点的混合溶液中:
![](https://math.21cnjy.com/MathMLToImage?mml=%3Cmath+xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F1998%2FMath%2FMathML%22%3E%3Cmrow%3E%3Cmi%3Ec%3C%2Fmi%3E%3Cmrow%3E%3Cmo%3E%28%3C%2Fmo%3E%3Cmrow%3E%3Cmi%3EN%3C%2Fmi%3E%3Cmsubsup%3E%3Cmi%3EH%3C%2Fmi%3E%3Cmn%3E4%3C%2Fmn%3E%3Cmo%3E%2B%3C%2Fmo%3E%3C%2Fmsubsup%3E%3C%2Fmrow%3E%3Cmo%3E%29%3C%2Fmo%3E%3C%2Fmrow%3E%3Cmo%3E%2B%3C%2Fmo%3E%3Cmi%3Ec%3C%2Fmi%3E%3Cmrow%3E%3Cmo%3E%28%3C%2Fmo%3E%3Cmrow%3E%3Cmi%3EN%3C%2Fmi%3E%3Cmsub%3E%3Cmi%3EH%3C%2Fmi%3E%3Cmn%3E3%3C%2Fmn%3E%3C%2Fmsub%3E%3Cmo%3E%E2%8B%85%3C%2Fmo%3E%3Cmsub%3E%3Cmi%3EH%3C%2Fmi%3E%3Cmn%3E2%3C%2Fmn%3E%3C%2Fmsub%3E%3Cmi%3EO%3C%2Fmi%3E%3C%2Fmrow%3E%3Cmo%3E%29%3C%2Fmo%3E%3C%2Fmrow%3E%3Cmo%3E%3D%3C%2Fmo%3E%3Cmi%3Ec%3C%2Fmi%3E%3Cmrow%3E%3Cmo%3E%28%3C%2Fmo%3E%3Cmrow%3E%3Cmi%3EC%3C%2Fmi%3E%3Cmsup%3E%3Cmi%3El%3C%2Fmi%3E%3Cmo%3E%E2%88%92%3C%2Fmo%3E%3C%2Fmsup%3E%3C%2Fmrow%3E%3Cmo%3E%29%3C%2Fmo%3E%3C%2Fmrow%3E%3Cmo%3E%2B%3C%2Fmo%3E%3Cmi%3Ec%3C%2Fmi%3E%3Cmrow%3E%3Cmo%3E%28%3C%2Fmo%3E%3Cmrow%3E%3Cmi%3EC%3C%2Fmi%3E%3Cmsub%3E%3Cmi%3EH%3C%2Fmi%3E%3Cmn%3E3%3C%2Fmn%3E%3C%2Fmsub%3E%3Cmi%3EC%3C%2Fmi%3E%3Cmi%3EO%3C%2Fmi%3E%3Cmsup%3E%3Cmi%3EO%3C%2Fmi%3E%3Cmo%3E%E2%88%92%3C%2Fmo%3E%3C%2Fmsup%3E%3C%2Fmrow%3E%3Cmo%3E%29%3C%2Fmo%3E%3C%2Fmrow%3E%3Cmo%3E%2B%3C%2Fmo%3E%3Cmi%3Ec%3C%2Fmi%3E%3Cmrow%3E%3Cmo%3E%28%3C%2Fmo%3E%3Cmrow%3E%3Cmi%3EC%3C%2Fmi%3E%3Cmsub%3E%3Cmi%3EH%3C%2Fmi%3E%3Cmn%3E3%3C%2Fmn%3E%3C%2Fmsub%3E%3Cmi%3EC%3C%2Fmi%3E%3Cmi%3EO%3C%2Fmi%3E%3Cmi%3EO%3C%2Fmi%3E%3Cmi%3EH%3C%2Fmi%3E%3C%2Fmrow%3E%3Cmo%3E%29%3C%2Fmo%3E%3C%2Fmrow%3E%3C%2Fmrow%3E%3C%2Fmath%3E)
- D、混合溶液pH=7时,加入氨水体积大于40mL