本课配套习题挑战模式1/5
单选题
难度系数:
1.下列有关叙述中正确的是
A: 难溶于水的电解质一定是弱电解质 |
B: 强电解质的水溶液导电能力一定比弱电解质水溶液的导电能力强 |
C: 易溶于水的电解质一定是强电解质 |
D: 强电解质在水溶液中的电离过程是不可逆的 |
一次做对,真牛!
+5奖励规则>
- 提示1:5b2x5ZON5rq25ray5a+855S16IO95Yqb5by65byx55qE5piv5Y+v56e75Yqo55qE55S16I235rWT5bqm5Yaz5a6a55qE44CC
- 答案:RA==
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本课配套习题挑战模式2/5
单选题
难度系数:
2.用食用白醋(醋酸浓度约为1mol/L)进行下列实验,能证明醋酸为弱电解质的是
A: 白醋中滴入石蕊试液呈红色 |
B: 白醋加入豆浆中有沉淀产生 |
C: 蛋壳浸泡在白醋中有气体放出 |
D: pH试纸显示醋酸的pH为2~3 |
一次做对,真牛!
+5奖励规则>
- 提示1:IOW8seeUteino+i0qOS4jeiDveWFqOmDqOeUteemu+OAgg==
- 答案:RA==
5byx55S16Kej6LSo6YOo5YiG55S156a777yM5pWF5LuOcEjorqHnrpflh7rnmoTmtZPluqblsI/kuo7lrp7pmYXmtZPluqbvvIzliJnlj6/or7TmmI7or6XnlLXop6PotKjkuLrlvLHnlLXop6PotKjjgII=
本课配套习题挑战模式3/5
单选题
难度系数:
3.下列说法下列正确的是
A: 强电解质的水溶液中不存在溶质分子,弱电解质的水溶液中存在溶质分子和离子 |
B: 强电解质的水溶液导电性强于弱电解质的水溶液 |
C: 强电解质都是离子化合物,弱电解质都是共价化合物 |
D: 强电解质易溶于水,弱电解质难溶于水 |
一次做对,真牛!
+5奖励规则>
- 提示1:55S16Kej6LSo55qE5by65byx5LiO5rq26Kej5oCn5peg5YWz44CC
- 提示2:55S16Kej6LSo5rC05rq25ray55qE5a+855S15oCn5LiO55S16Kej6LSo55qE5by65byx5peg5YWz
- 答案:QQ==
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本课配套习题挑战模式4/5
多选题
难度系数:
4.甲酸的下列性质中,可以证明它是弱电解质的是
A: 1 mol·L-1甲酸溶液的pH约为2 |
B: 甲酸能与水以任意比互溶 |
C: 10 mL 1 mol·L-1甲酸恰好与10 mL 1 mol·L-1 NaOH溶液完全反应 |
D: 在相同条件下,甲酸溶液的导电性比强酸溶液的弱 |
一次做对,真牛!
+5奖励规则>
- 提示1:IOW8seeUteino+i0qOa6tuS6juawtOWPquiDvemDqOWIhueUteemuw==
- 提示2:5rOo5oSP5Yy65YiG5rq26Kej5oCn5LiO55S16Kej6LSo5by65byx44CB5Y+N5bqU56iL5bqm5LiO55S16Kej6LSo5by65byx55qE5YWz57O777yb
- 答案:QSxE
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本课配套习题挑战模式5/5
单选题
难度系数:
5.下列各组物质中都属于弱电解质的一组物质是
A: NH3 、SO2、H2O、HI |
B: HF、H2O、NH3•H2O、H2SO3 |
C: BaSO4、Cl2、HClO、H2S |
D: NaHSO3、H2O、CO2、H2CO3 |
一次做对,真牛!
+5奖励规则>
- 提示1:IOW8uueUteino+i0qOacie+8muW8uumFuOOAgeW8uueiseOAgeWkp+mDqOWIhueahOebkOetie+8mw==
- 提示2:IOW8seeUteino+i0qOacie+8muW8semFuOOAgeW8seeiseOAgeWwkemDqOWIhuebkO+8mw==
- 提示3:IOazqOaEj+WNlei0qOS4jua3t+WQiOeJqeS4jeWxnuS6jua3t+WQiOeJqeOAgui/mOimgeazqOaEj+eUteino+i0qOeahOW8uuW8seS4jua6tuino+aAp+aXoOWFs++8mw==
- 答案:Qg==
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