本课配套习题挑战模式1/5
单选题
难度系数:
1.氢氧化钠是一种重要的化工原料,其俗称为
A: 纯碱 |
B: 火碱 |
C: 食盐 |
D: 消石灰 |
一次做对,真牛!
+5奖励规则>
- 提示1:5rCi5rCn5YyW6ZKg5bi455So55qE5L+X56ew5Li654Gr56Kx77yM5rOo5oSP5LiO57qv56Kx5Yy65YiG5byA44CC
- 答案:Qg==
QeOAgee6r+eiseaYr+eis+mFuOmSoOeahOS/l+ensO+8jOaVhUHplJnor6/vvJs8YnI+QuOAgeeBq+eiseaYr+awouawp+WMlumSoOeahOS/l+WQje+8jOaVhULmraPnoa7vvJs8YnI+Q+OAgemjn+ebkOaYr+awr+WMlumSoOeahOS/l+WQje+8jOaVhUPplJnor6/vvJs8YnI+ROOAgea2iOefs+eBsOaYr+awouawp+WMlumSmeeahOS/l+WQje+8jOaVhUTplJnor6/vvJs8YnI+5pWF6YCJQu+8jg==
本课配套习题挑战模式2/5
单选题
难度系数:
2.下列各组气体,均可用固体氢氧化钠干燥的是
A: H2、O2、HCl |
B: H2、CO、O2 |
C: CO2、CH4、H2 |
D: CO2、CO、O2 |
一次做对,真牛!
+5奖励规则>
- 提示1:6Iul6IO95aSf55SoTmFPSOW5sueHpe+8jOWImeacrOi6q+S4jeiDveS4jk5hT0jlj5HnlJ/lj43lupTjgII=
- 答案:Qg==
SENs5LiOTmFPSOWPkeeUn+S4reWSjOWPjeW6lO+8jOWboOatpEHpobnmjpLpmaTvvJs8YnI+Q088c3ViPjI8L3N1Yj7kuLrpnZ7ph5HlsZ7msKfljJbnianvvIzlj6/ku6XkuI7norHnlJ/miJDnm5DlkozmsLTvvIzmlYXmjpLpmaRD44CBROS4pOmhueOAgg==
本课配套习题挑战模式3/5
单选题
难度系数:
3.下列关于氢氧化钠的叙述不正确的是
A: 氢氧化钠要密闭保存 |
B: 氢氧化钠易溶于水,溶解时放出大量的热量 |
C: 固体氢氧化钠可以干燥二氧化碳气体 |
D: 氢氧化钠溶液能去除油污,可作炉具清洁剂 |
一次做对,真牛!
+5奖励规则>
- 提示1:5pys6aKY6ICD5p+lTmFPSOeahOebuOWFs+aAp+i0qOOAguimgeazqOaEj+eahOaYr+eiseiDveWkn+S4jumdnumHkeWxnuawp+WMlueJqeWPjeW6lOeUn+aIkOebkOWSjOawtOOAgg==
- 答案:Qw==
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
本课配套习题挑战模式4/5
单选题
难度系数:
4.往滴有酚酞溶液的Ca(OH)2溶液的试管中滴入下列某物质至恰好完全反应,溶液的颜色始终不变的是
A: Na2CO3 |
B: H2SO4 |
C: CO2 |
D: 稀盐酸 |
一次做对,真牛!
+5奖励规则>
- 提示1:5pys6aKY5L6d5qyh5YiG5p6Q5Zub5Liq6YCJ6aG55Y2z5Y+v44CC6Iul5rq25ray5LiN5Y+N5bqU5oiW5Y+N5bqU5ZCO5LuN54S25ZGI56Kx5oCn77yM5YiZ6aKc6Imy5LiN5Y+Y44CC
- 答案:QQ==
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
本课配套习题挑战模式5/5
单选题
难度系数:
5.在装有氢氧化钡溶液的两支试管中,各加入一种溶液,两支试管里分别出现白色沉淀和蓝色沉淀.则依次加入的溶液是
A: 碳酸钠溶液、氯化铜溶液 |
B: 氯化钠溶液、硝酸铁溶液 |
C: 硝酸铁溶液、碳酸钠溶液 |
D: 硫酸钠溶液、硝酸铁溶液 |
一次做对,真牛!
+5奖励规则>
- 提示1:5pys6aKY5Y+v5Lul5LuO566A5YiG5p6Q77yM6JOd6Imy5rKJ5reA5LiA6Iis5piv5Zug5Li66ZOc56a75a2Q55qE5b2x5ZON77yM5rCi5rCn5YyW6ZOc5Li66JOd6Imy5rKJ5reA44CC
- 答案:QQ==
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