单选题 较难0.4 引用6 组卷1439
常温下,用
溶液分别滴定
浓度均为
的
溶液和
溶液,滴定曲线如图。下列说法正确的是
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/16/78ce6f52-e080-44e6-a975-801c168af323.jpg?resizew=235)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/16/78ce6f52-e080-44e6-a975-801c168af323.jpg?resizew=235)
A.电离平衡常数: |
B.水的电离程度:④>①>③>② |
C.点①和点②所示溶液中: |
D.点③和点④所示溶液中均有: |
2021·重庆沙坪坝·模拟预测
类题推荐
常温下,用0.10 mol·L-1NaOH溶液分别滴定20.00 mL浓度均为0.10 mol·L-1CH3COOH溶液和HCN溶液,所得滴定曲线如图。下列说法不正确 的是
![](https://img.xkw.com/dksih/QBM/2021/1/23/2642287837667328/2643041409138688/STEM/878b2c08-9c06-43d3-8af2-2b007a92ab63.png)
![](https://img.xkw.com/dksih/QBM/2021/1/23/2642287837667328/2643041409138688/STEM/878b2c08-9c06-43d3-8af2-2b007a92ab63.png)
A.点①所示溶液中,CN-的水解程度大于HCN的电离程度 |
B.点①和点②所示溶液中:c(CN-)>c(CH3COO-) |
C.点③所示溶液中:c(Na+)=c(CH3COO-)>c(H+)=c(OH-) |
D.点④所示溶液中:c(Na+)>c(CH3COO-)>c(OH-)>c(H+) |
室温下,用0.10 mol/L NaOH溶液分别滴定20.00 mL浓度均为0.10 mol/L的CH3COOH 溶液和HCN溶液所得滴定曲线如图所示。下列说法正确的是
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/10/d83f89a3-47a3-4726-a2d7-47937a3bc767.png?resizew=223)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/10/d83f89a3-47a3-4726-a2d7-47937a3bc767.png?resizew=223)
A.室温下,电离平衡常数:K(HCN)>K(CH3COOH) |
B.点①和点②所示溶液中:c(CH3COO-)>c(CN-) |
C.点③所示的溶液中:c(CH3COO-)+c(OH-)=c(CH3COOH)+c(H+) |
D.点④所示的溶液中:c(Na+)>c(OH-)>c(CH3COO-)>c(H+) |
常温下,用0.100mol•L-1NaOH溶液分别滴定20.00mL浓度均0.100mol•L-1CH3COOH溶液和HCN溶液,所得滴定曲线如图。下列说法不正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/21/25c21e95-5aec-4a45-bd50-e78d19c0c729.png?resizew=206)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/21/25c21e95-5aec-4a45-bd50-e78d19c0c729.png?resizew=206)
A.点①和点②所示溶液中:c(CH3COO-)>c(CN-) |
B.点③时:c(Na+)=c(CH3COO-)>c(H+)=c(OH-) |
C.点③和点④所示溶液中水的电离程度:③<④ |
D.点④溶液中阴离子总数小于点⑤ |
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