中学生网络课堂本课配套习题挑战模式1/5
单选题
难度系数：
1.
自来水是用氯气杀菌消毒的，不法商贩用自来水冒充纯净水出售，为辨别真伪，可用下列哪种试剂鉴别（ ）
| A: 酚酞溶液 |
| B: 酸化的FeCl3溶液 |
| C: 酸化的AgNO3溶液 |
| D: NaOH溶液 |
一次做对，真牛！
+5奖励规则>
- 提示1：PHA+5Zug57qv5YeA5rC06ZSA5ZSu5Lit5LiN5ZCr5rCv56a75a2Q77yM6ICM6Ieq5p2l5rC05Lit5ZCr5rCv56a75a2QPC9wPg==
- 提示2：PHA+5Li65LqG5qOA6aqMQ2w8c3VwPi08L3N1cD7nmoTlrZjlnKjlj6/ku6XpgInnlKjnoZ3phbjphbjljJbnmoTnoZ3phbjpk7bmurbmtrLvvIzlpoLmnpzmnInnmb3oibLmsonmt4DnlJ/miJDvvIzliJnlkKvmnInmsK/nprvlrZDvvJvlpoLmnpzml6Dnmb3oibLmsonmt4DnlJ/miJDvvIzliJnkuI3lkKs8YnI+PC9wPg==
- 提示3：PHA+5omA5Lul5ZCR5Lik5qC35ZOB5Lit5Yqg5YWl56Gd6YW46YW45YyW55qE56Gd6YW46ZO25rq25ray77yM5rCv56a75a2Q5LiO6ZO256a75a2Q5Y+N5bqU55Sf5oiQ5rCv5YyW6ZO255m96Imy5rKJ5reA77yM5omA5Lul5Y+Y5rWR5rWK55qE5piv6Ieq5p2l5rC077yM5Y+N5LmL5piv57qv5YeA5rC0PGJyPjwvcD4=
- 答案：Qw==
PHA+5Zug57qv5YeA5rC06ZSA5ZSu5Lit5LiN5ZCr5rCv56a75a2Q77yM6ICM6Ieq5p2l5rC05Lit5ZCr5rCv56a75a2Q44CCPGJyPuS4uuS6huajgOmqjENsPHN1cD4tPC9zdXA+55qE5a2Y5Zyo5Y+v5Lul6YCJ55So56Gd6YW46YW45YyW55qE56Gd6YW46ZO25rq25ray77yM5aaC5p6c5pyJ55m96Imy5rKJ5reA55Sf5oiQ77yM5YiZ5ZCr5pyJ5rCv56a75a2Q77yb5aaC5p6c5peg55m96Imy5rKJ5reA55Sf5oiQ77yM5YiZ5LiN5ZCrLjxicj7miYDku6XlkJHkuKTmoLflk4HkuK3liqDlhaXnoZ3phbjphbjljJbnmoTnoZ3phbjpk7bmurbmtrLvvIzmsK/nprvlrZDkuI7pk7bnprvlrZDlj43lupTnlJ/miJDmsK/ljJbpk7bnmb3oibLmsonmt4DvvIzmiYDku6Xlj5jmtZHmtYrnmoTmmK/oh6rmnaXmsLTvvIzlj43kuYvmmK/nuq/lh4DmsLTjgII8L3A+
本课配套习题挑战模式2/5
单选题
难度系数：
2.下列检验溶液中离子是否存在的方法正确的是（ ）
| A: Na+：用焰色反应看是否有蓝色火焰 |
| B: Al3+：加氨水看是否有白色沉淀 |
| C: Fe3+：滴入KSCN溶液看是否出现红色 |
| D: Cl-：加入AgNO3溶液观察是否出现白色沉淀 |
一次做对，真牛！
+5奖励规则>
- 提示1：IEHjgIHpkqDnprvlrZDnmoTmo4DpqoznlKjnhLDoibLlj43lupTms5XvvIzlkKvmnInpkqDlhYPntKDnmoTnianotKjlgZrnhLDoibLlj43lupTlrp7pqozml7bvvIzngavnhLDkuLrpu4ToibLvvIzmlYVB6ZSZ6K+v77yb
- 提示2：IELjgIHmo4Dpqozpk53nprvlrZDlj6/ku6XnlKjng6fnorHmurbmtrLvvIzpmo/nnYDng6fnorHmurbmtrLph4/nmoTlop7liqDvvIzlhYjlh7rnjrDnmb3oibLmsonmt4DvvIznhLblkI7pgJDmuJDmtojlpLHvvIzmlYVC6ZSZ6K+v77yb
- 提示3：IEPjgIHmo4DpqozkuInku7fpk4HnprvlrZDnmoTnibnlvoHor5XliYLmmK9LU0NO5rq25ray77yM5LqM6ICF5Y+R55Sf5Y+N5bqU55Sf5oiQ57qi6Imy54mp6LSo77yM5pWFQ+ato+ehru+8mw==
- 提示4：ROOAgeawr+emu+WtkOeahOajgOmqjOeUqOehnemFuOmFuOWMlueahEFnTk88c3ViPjM8L3N1Yj7murbmtrLvvIznnIvmmK/lkKblh7rnjrDnmb3oibLmsonmt4DmnaXmo4DpqozvvIzmlYVE6ZSZ6K+vLg==
- 答案：Qw==
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
本课配套习题挑战模式3/5
单选题
难度系数：
3.关于某溶液中所含离子的鉴别，下列判断正确的是（ ）
| A: 加入BaCl2溶液，生成白色沉淀，加稀硝酸沉淀不消失，则原溶液中一定含有SO42- |
| B: 加入NaOH溶液，加热若产生能使湿润的红色石蕊试纸变蓝的气体，则原溶液中一定含有NH4+ |
| C: 用洁净的铂丝蘸取溶液在火焰上灼烧，产生黄色的火焰，则原溶液中一定不含有K+ |
| D: 分别含有Mg2+、Cu2+、Fe2+和Na+的四种盐溶液，只用NaOH溶液不能一次性鉴别出来 |
一次做对，真牛！
+5奖励规则>
- 提示1：IEHjgIHnlLHkuo7nlJ/miJDnmoTmsonmt4DkuI3kuIDlrprmmK/noavphbjpkqHvvIzmnInlj6/og73mmK/msK/ljJbpk7bvvIzmlYVB6ZSZ6K+v
- 提示2：IELjgIHliqDlhaVOYU9I5rq25ray77yM5Yqg54Ot6Iul5Lqn55Sf6IO95L2/5rm/5ram55qE57qi6Imy55+z6JWK6K+V57q45Y+Y6JOd55qE5rCU5L2T77yM5YiZ5Y6f5rq25ray5Lit5LiA5a6a5ZCr5pyJTkg8c3ViPjQ8L3N1Yj48c3VwPis8L3N1cD7vvIzmlYVC5q2j56Gu
- 提示3：IEPjgIHpkr7nprvlrZDmo4DpqozvvIzlv4XpobvpgI/ov4fok53oibLnmoTpkrTnjrvnkoPop4Llr5/ngavnhLDpopzoibLvvIzmlYVD6ZSZ6K+v77ybRC4g5rCi5rCn5qC55LiOTWc8c3VwPjIrPC9zdXA+44CBQ3U8c3VwPjIrPC9zdXA+5Y+N5bqU5YiG5Yir5Lqn55Sf55m96Imy5rKJ5reA44CB6JOd6Imy5rKJ5reA77yM5LiORmU8c3VwPjIrPC9zdXA+5Y+N5bqU55Sf5oiQ55qE55m96Imy5rKJ5reA6L+F6YCf5Y+Y5Li654Gw57u/6Imy5pyA5ZCO5Y+Y5Li657qi6KSQ6Imy77yM5rCi5rCn5qC55LiO6ZKg56a75a2Q5LiN5Y+N5bqU77yM5Y+v5Lul5LiA5qyh5oCn6Ym05Yir5Ye65p2l77yM5pWFROmUmeivrw==
- 答案：Qg==
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
本课配套习题挑战模式4/5
单选题
难度系数：
4.
某溶液中可能含有SO42-、CO32-、Cl-. 为了检验其中是否含有SO42-，除BaCl2溶液外，还需要的溶液是（ ）
| A: H2SO4 |
| B: HCl |
| C: NaOH |
| D: NaNO3 |
一次做对，真牛！
+5奖励规则>
- 提示1：PHA+5Y+q5Yqg5Y+v5rq25oCn6ZKh55uQ77yM5rq25ray5Lit55qEU088c3ViPjQ8L3N1Yj48c3VwPjItPC9zdXA+44CBQ088c3ViPjM8L3N1Yj48c3VwPjItPC9zdXA+6YO95Y+v6IO95a2Y5ZyoPC9wPg==
- 提示2：PHA+6ZyA5Yqg6YW45YaN5qyh5qOA6aqM44CCPC9wPg==
- 答案：Qg==
PHA+5Y+q5Yqg5Y+v5rq25oCn6ZKh55uQ77yM5rq25ray5Lit55qEU088c3ViPjQ8L3N1Yj48c3VwPjItPC9zdXA+44CBQ088c3ViPjM8L3N1Yj48c3VwPjItPC9zdXA+6YO95Y+v6IO95a2Y5Zyo77yM6L+Y6ZyA6KaB5YaN5Yqg5YWl6YW45YaN5qyh5qOA6aqM5pyJ5LiN5rq26Kej55qE5rKJ5reA77yM5aaC5p6c5pyJ5LiN5rq26Kej55qE5rKJ5reA5omN5Y+v5Lul6K+B5piO5pivU088c3ViPjQ8L3N1Yj48c3VwPjItPC9zdXA+44CCPGJyPjwvcD48cD7pgInpobnkuK3mnInkuKTnp43phbjvvIzlpoLmnpzliqDnoavphbjvvIzkvJrlvJXlhaVTTzxzdWI+NDwvc3ViPjxzdXA+Mi08L3N1cD7nprvlrZDvvIzlm6DmraTpgInmi6nnm5DphbhIQ2zjgII8L3A+
本课配套习题挑战模式5/5
单选题
难度系数：
5.
下列叙述正确的是（ ）
| A: 用可溶性钡盐检验SO42-的存在时，先在待测溶液中加入盐酸，其作用是排除SO42-以外的其它阴离子及Ag+的干扰 |
| B: 能使润湿的淀粉KI试纸变成蓝色的物质一定是Cl2 |
| C: 做焰色反应实验时，应先将铂丝（或铁丝）用稀硫酸洗净后，在酒精灯外焰上灼烧至没有颜色时，再蘸取待测溶液进行实验 |
| D: 在某待测液中先滴加盐酸再加入硝酸银溶液有白色沉淀产生，说明待测液中必有Cl- |
一次做对，真牛！
+5奖励规则>
- 提示1：PHA+QS4g5qOA6aqMU088c3ViPjQ8L3N1Yj48c3VwPjItPC9zdXA+56a75a2Q55qE5a2Y5Zyo5pe277yM5YWI5Zyo5b6F5rWL5rq25ray5Lit5Yqg5YWl55uQ6YW477yM5peg5piO5pi+55qE546w6LGh77yM5YaN5Yqg5Y+v5rq25oCn6ZKh55uQ77yM5aaC5p6c5Ye6546w55m96Imy5rKJ5reA77yM6K+B5piO5ZCr5pyJ56Gr6YW45qC556a75a2Q77yM5pWFQeato+ehrjwvcD4=
- 提示2：PHA+Qi4g5L2/5ram5rm/55qE5reA57KJS0nor5Xnurjlj5jmiJDok53oibLvvIzmmK/lm6DkuLrpgYfliLDmsKfljJbliYLmiornopjnprvlrZDmsKfljJbkuLrnopjljZXotKjpgYfmt4Dnsonlj5jok53vvJvmsKfljJbliYLkuI3kuIDlrprmmK/msK/msJTvvIzlhbbku5bmsKfljJbliYLkuZ/lj6/ku6Xlh7rnjrDmraTnjrDosaHvvIzmlYVC6ZSZ6K+vPC9wPg==
- 提示3：PHA+Qy4g5YGa54Sw6Imy5Y+N5bqU5a6e6aqM5pe277yM6YCJ55So55uQ6YW45riF5rSX6ZOC5Lid77yM5pWFQ+mUmeivr++8mzxicj48L3A+
- 提示4：PHA+RC4g5Zyo5p+Q5b6F5rWL5ray5Lit5YWI5ru05Yqg55uQ6YW45YaN5Yqg5YWl56Gd6YW46ZO25rq25ray77yM5LiA5a6a5pyJ55m96Imy5rKJ5reA5rCv5YyW6ZO25Lqn55Sf77yM5Zug5Li655uQ6YW45Lit5ZCr5pyJ5rCv56a75a2Q77yM5pWF6ZSZ6K+vPC9wPg==
- 答案：QQ==
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
