1/5单选题
难度：
1.已知室温时，0.1 mol·L－1某一元酸HA在水中有1.0%电离，此酸的电离平衡常数为
| A | 10－3 mol·L－1 |
| B | 10－4mol·L－1 |
| C | 10－5mol·L－1 |
| D | 10－6 mol·L－1 |
- 提示1：
- IOWGmeWHuueUteemu+W5s+ihoeihqOi+vuW8jw==
- 提示2：
- IOWIl+aWueeoi+W8j+i/m+ihjOiuoeeulw==
正确答案：Qw==
PGltZyB3aWR0aD0xOTcgaGVpZ2h0PTEzNCBzcmM9Imh0dHBzOi8vcDIucWluZ2d1by5jb20vRzEvTTAwL0EzL0U0L3JCQUNFMVZCNi1IVERmakdBQUFKakJ2Q0hnbzA2Ny5wbmciPg==
2/5单选题
难度：
2.已知下面三个数据：①7. 2×10-4②2. 6×10-4③4. 9×10-10分别是三种酸的电离平衡常数，若已知这三种酸可发生如下反应：NaCN+HNO2==HCN+NaNO2NaNO2+HF==HCN+NaF NaNO2+HF==HNO2+NaF由此可判断下列叙述中正确的是
| A | HF的电离常数是① |
| B | HNO2的电离常数是① |
| C | HCN的电离常数是② |
| D | HNO2的电离常数是③ |
- 提示1：
- IOWFiOagueaNruW8uumFuOWItuW8semFuOeahOWOn+WIme+8jOWIpOaWremFuOaAp+Wkp+Wwj0hGJmd0O0hOTzxzdWI+Mjwvc3ViPiZndDtIQ04=
- 提示2：
- IOmFuOaAp+i2iuW8uu+8jOeUteemu+W5s+ihoeW4uOaVsOi2iuWkpw==
正确答案：QQ==
5qC55o2u5by66YW45Yi25byx6YW45Y6f5YiZPGJyPk5hQ04rSE5PPHN1Yj4yPC9zdWI+PT09SENOK05hTk88c3ViPjI8L3N1Yj7lj6/nn6VITk88c3ViPjI8L3N1Yj4mZ3Q7SENOPGJyPk5hQ04rSEY9PT1IQ04rTmFG5Y+v55+lSEYmZ3Q7SENOIDxicj5OYU5PPHN1Yj4yPC9zdWI+K0hGPT09SE5PPHN1Yj4yPC9zdWI+K05hRuWPr+efpUhGJmd0O0hOTzxzdWI+Mjwvc3ViPjxicj7miYDku6VIRiZndDtITk88c3ViPjI8L3N1Yj4mZ3Q7SENOPGJyPumFuOaAp+i2iuW8uu+8jOeUteemu+W5s+ihoeW4uOaVsOi2iuWkp+OAgjxicj4=
3/5单选题
难度：
3.已知下面三个数据：7.2×10-4、4.6×10-4、4.9×10-10是三种酸HNO2、HCN、HF的电离平衡常数，若已知这些酸可发生如下反应：①NaCN+HNO2=HCN+NaNO2②NaNO2+HF=HNO2+NaF，由此可判断下列叙述中不正确的是
| A | HF的电离平衡常数为7.2×10-4 |
| B | 根据①②两个反应即可知三种酸的相对强弱 |
| C | 反应NaCN+HF=HCN+NaF能发生 |
| D | 同体积同浓度的三种酸与NaOH反应消耗NaOH物质的量不相等 |
- 提示1：
- IOebuOWQjOa4qeW6puS4i++8jOmFuOeahOeUteemu+W4uOaVsOi2iuWkp++8jOivpemFuOeahOmFuOaAp+i2iuW8uuOAgg==
- 提示2：
- IOe7k+WQiOW8uumFuOWItuWPluW8semFuOWIhuaekOino+etlOOAgg==
正确答案：RA==
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
4/5单选题
难度：
4.已知下面三个数据：7.2×10－4、4.6×10－4、4.9 ×10－10分别是下列有关的三种酸的电离常数，若已知下列反应可以发生：
NaCN＋HNO2===HCN＋NaNO2
NaCN＋HF===HCN＋NaF
NaNO2＋HF===HNO2＋NaF
由此可判断下列叙述不正确的是
NaCN＋HNO2===HCN＋NaNO2
NaCN＋HF===HCN＋NaF
NaNO2＋HF===HNO2＋NaF
由此可判断下列叙述不正确的是
| A | K(HF)＝7.2×10－4 |
| B | K(HNO2)＝4.9×10－10 |
| C | 根据其中两个反应即可得出结论 |
| D | K(HCN)<K(HNO2)<K(HF) |
- 提示1：
- IOagueaNruW8uumFuOWItuW8semFuOeahOWOn+eQhuadpeWIhuaekOWQhOWPjeW6lOOAgg==
正确答案：Qg==
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
5/5单选题
难度：
5.高氯酸、硫酸、硝酸和盐酸都是强酸，其酸性在水溶液中差别不大. 以下是某温度下这四种酸在冰醋酸中的电离常数
从以上表格中判断以下说法中不正确的是
从以上表格中判断以下说法中不正确的是
| A | 在冰醋酸中这四种酸都没有完全电离 |
| B | 在冰醋酸中高氯酸是这四种酸中最强的酸 |
| C | 在冰醋酸中硫酸的电离方程式为H2SO4===2H++SO42- |
| D | 水对于这四种酸的强弱没有区分能力，但醋酸可以区别这四种酸的强弱 |
- 提示1：
- IOmFuOeahOeUteemu+W5s+ihoeW4uOaVsOi2iuWkp++8jOWImeWFtueUteemu+eoi+W6pui2iuWkp++8jOmFuOaAp+i2iuW8uu+8mw==
- 提示2：
- My4g5a2Y5Zyo55S156a75bmz6KGh55qE6YW45Zyo55S156a75pe25piv5LiN5a6M5YWo55S156a755qE77yM5LiU5aSa5YWD6YW45piv5YiG5q2l55S156a755qE77yb
- 提示3：
- NC4g5Zyo5rq25YmC5Lit5a6M5YWo55S156a755qE55S16Kej6LSo5LiN6IO95Yy65YiG77yM5LiN5a6M5YWo55S156a755qE55S16Kej6LSo6IO95Yy65YiG44CC
正确答案：Qw==
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