中学生网络课堂本课配套习题挑战模式1/4
单选题
难度系数：
1.
现有16g Fe2O3和CuO的混合物，进行如下实验；把混合物全部加入到100g足量的硫酸溶液中，恰好完全溶解。然后滴加150 g 16 %的氢氧化钠溶液，沉淀质量不再改变。试计算所用硫酸溶液溶质的质量分数
| A: 29.4% |
| B: 16% |
| C: 30% |
| D: 27% |
一次做对，真牛！
+5奖励规则>
- 提示1：PHA+5q2k6aKY55qE6Kej6aKY5YWz6ZSu5Li76KaB5piv5om+5Ye6TmE8c3VwPis8L3N1cD7lkoxTTzxzdWI+NDwvc3ViPjxzdXA+Mi08L3N1cD7kuYvpl7TnmoTlhbPns7vvvIznlLHkuo7ml6DorrrlvIDlp4vmgI7kuYjlj43lupTvvIzmnIDlkI7liqDlhaXmsKLmsKfljJbpkqDku6XlkI7vvIzpg73mmK/pkqDnprvlrZDlkoznoavphbjmoLnnprvlrZDnu5PlkIjkuLrnoavphbjpkqDvvIzmiYDku6XmnIlIPHN1Yj4yPC9zdWI+U088c3ViPjQ8L3N1Yj7vvZ4yTmFPSOOAgjwvcD4=
- 答案：QQ==
PGRpdj48aW1nIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvMzkvMUMvckJBQ0UxTVd4S1B6U0Qyb0FBQWFQbUtCV0x3NDEyLnBuZyIgZGF0YS1ja2Utc2F2ZWQtc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC8zOS8xQy9yQkFDRTFNV3hLUHpTRDJvQUFBYVBtS0JXTHc0MTIucG5nIiBoZWlnaHQ9IjE4MyIgd2lkdGg9IjQ5MCI+PGJyPjwvZGl2Pg==
本课配套习题挑战模式2/4
单选题
难度系数：
2.
有一在空气中暴露过的NaOH固体，经分析知其含水7.65%，含Na2CO34.32%，其余是NaOH。若将此样品1g放入100g3.65%的稀盐酸中充分反应，残余的酸再用10g 30.9%的NaOH溶液恰好完全中和。将反应后的溶液蒸干，得到固体的质量是
| A: 5.85g |
| B: 4.52g |
| C: 2.62g |
| D: 1.33g |
一次做对，真牛！
+5奖励规则>
- 提示1：PHA+5Zug5Li6MTAwZzMuNjUl55qE56iA55uQ6YW45LiO56Kz6YW46ZKg44CB5rCi5rCn5YyW6ZKg5rq25ray6YO95Y+N5bqU77yM5bGe5LqO4oCc5a6M5YWo5Lit5ZKM4oCd77yM5pWF5rCv5YWD57Sg5YWo6YOo5LiO6ZKg5YWD57Sg5Y+N5bqU77yM55Sf5oiQ5rCv5YyW6ZKg77ybPGJyPjwvcD4=
- 提示2：PHA+5YWI5rGC5Ye6MTAwZzMuNjUl55qE56iA55uQ6YW455qE5rCv5YWD57Sg55qE6LSo6YeP77yM5YiZ5Y+v5rGC5Ye65rCv5YyW6ZKg55qE6LSo6YePLjwvcD4=
- 答案：QQ==
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
本课配套习题挑战模式3/4
单选题
难度系数：
3.
运用侯氏制碱法制得的纯碱中可能有少量氯化钠。现取某种仅含有氯化钠杂质的纯碱样品16.7g，全部溶解在350.0g水中，再加上氯化钡溶液150g，恰好完全反应生成碳酸钡沉淀。过滤出沉淀并干燥后，称的质量为19.7g。求：（1）纯碱样品中碳酸钠的质量分数。（2）滤液中氯化钠的质量
| A: 64.47%；17.8g |
| B: 64.47%；16.7g |
| C: 63.47%；17.8g |
| D: 63.47%；16.7g |
一次做对，真牛！
+5奖励规则>
- 提示1：PHA+5qC55o2u5YyW5a2m5pa556iL5byP55qE6K6h566X77yM5Yip55So5rKJ5reA55qE6YeP5rGC5Y+N5bqU54mp56Kz6YW46ZKg55qE6YeP77yM5Yip55So5Y6f5p2l5rCv5YyW6ZKg55qE6LSo6YeP5Yqg5LiK55Sf5oiQ55qE6YeP77yM5rGC5ruk5ray5Lit55qE5oC76YeP44CCPC9wPg==
- 提示2：PHA+5rq25ray55qE6YeP5Y+v6YCa6L+H5Y+N5bqU5YmN54mp6LSo55qE5oC75ZKM5YeP55Sf5oiQ5rKJ5reA55qE6YeP5b6X5YiwLjwvcD4=
- 答案：Qw==
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
本课配套习题挑战模式4/4
单选题
难度系数：
4.
现有氯化钠和硝酸钾的固体混合物10.85g，将它们全部放入烧杯中，再加入170g硝酸银溶液恰好完全反应，然后过滤、洗涤、干燥，称得沉淀14.35g。则原固体混合物中硝酸钾的质量为多少克，原硝酸银溶液中溶质的质量分数为
| A: 5 g，10% |
| B: 6 g；10% |
| C: 5 g，20% |
| D: 6 g，20% |
一次做对，真牛！
+5奖励规则>
- 提示1：PHA+5qC55o2u55Sf5oiQ55qE5rCv5YyW6ZO25rKJ5reA55qE6LSo6YeP77yM57uT5ZCI5Y+N5bqU55qE5YyW5a2m5pa556iL5byP5Y+v6K6h566X5Ye65Y6f5Zu65L2T5re35ZCI54mp5Lit55qE5rCv5YyW6ZKg55qE6LSo6YeP5ZKM56Gd6YW46ZO25rq25ray5Lit55qE56Gd6YW46ZO255qE6LSo6YeP77yM6L+b6ICM6K6h566X5Ye65Y6f5re35ZCI54mp5Lit56Gd6YW46ZK+55qE6LSo6YeP77ybPC9wPg==
- 提示2：PHA+54S25ZCO57uT5ZCI5rq26LSo55qE6LSo6YeP5YiG5pWw55qE6K6h566X5YWs5byP6K6h566X5Ye656Gd6YW46ZO25rq25ray5Lit55qE6LSo6YeP5YiG5pWw5Y2z5Y+vLjwvcD4=
- 答案：QQ==
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
