中学生网络课堂本课配套习题挑战模式1/5
多选题
难度系数：
1.
为除去粗盐中含有的硫酸钠，氯化镁、氯化钙等杂质，应加入过量的氯化钡、氢氧化钠、碳酸钠等物质．将杂质转化为沉淀过滤除去，再向滤液中加入适量的盐酸得到精盐水．该工程示意如下：
对该过程的认识中，正确的是（ ）
| A: ①操作中需要进行搅拌，目的是提高氯化钠的溶解度 |
| B: ③、④两步操作顺序可以颠倒 |
| C: ⑤操作得的沉淀中共有三种物质 |
| D: ⑥操作中，加入盐酸的目的是除去过量的氢氧化钠和碳酸钠，将滤液的pH调为7 |
一次做对，真牛！
+5奖励规则>
- 提示1：PHA+6Zmk5Y6756Gr6YW45qC556a75a2Q55So6ZKh56a75a2Q5rKJ5reA77yM6Zmk5Y676ZWB56a75a2Q55So5rCi5rCn5qC556a75a2Q6L+b6KGM5rKJ5reA77yM6Zmk5Y676ZKZ56a75a2Q55So56Kz6YW45qC556a75a2Q6L+b6KGM5rKJ5reA77yM6L+H6YeP55qE6ZKh56a75a2Q6ZyA6KaB55So56Kz6YW45qC556a75a2Q6Zmk5Y676L+b6KGM5YiG5p6Q77yM5YaN5ZCR5ruk5ray5Lit5Yqg5YWl6YCC6YeP55qE55uQ6YW45b6X5Yiw57K+55uQ5rC0PGJyPjwvcD4=
- 答案：QixE
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
本课配套习题挑战模式2/5
单选题
难度系数：
2.
在粗盐提纯的实验中，下列操作正确的是（ ）
| A:
粗盐称量 |
| B:
粗盐溶解 |
| C:
浊液过滤 |
| D:
蒸发结晶 |
一次做对，真牛！
+5奖励规则>
- 提示1：PHA+54af5oKJ5ZCE56eN5Luq5Zmo55qE55So6YCU5Y+K5L2/55So5rOo5oSP5LqL6aG544CB5bi46KeB5YyW5a2m5a6e6aqM5Z+65pys5pON5L2c55qE5rOo5oSP5LqL6aG5PGJyPjwvcD4=
- 答案：Qg==
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
本课配套习题挑战模式3/5
单选题
难度系数：
3.
在粗盐提纯实验中最后进行NaCl溶液的蒸发时，一般有如下操作：
①固定铁圈位置 ②放置蒸发皿 ③放置酒精灯 ④加热并搅拌 ⑤停止加热，借余热蒸干
正确的操作顺序是（ ）
| A: ①②③④⑤ |
| B: ①③②④⑤ |
| C: ③①②④⑤ |
| D: ③②①④⑤ |
一次做对，真牛！
+5奖励规则>
- 提示1：PHA+57uE6KOF5Luq5Zmo55qE5LiA6Iis6aG65bqP5piv6YeH55So5YWI5bem5ZCO5Y+z77yM5YWI5LiL5ZCO5LiK55qE5Y6f5YiZPGJyPjwvcD4=
- 答案：Qw==
PHA+6Kej77ya57uE6KOF5Luq5Zmo5pe26KaB5LuO5LiL5ZCR5LiK57uE6KOF77yM6YWS57K+54Gv5Zyo6ZOB5ZyI5ZKM6JK45Y+R55q/55qE5LiL5pa577yM5omA5Lul6KaB5YWI5pS+6YWS57K+54Gv77yb54S25ZCO5YaN5Zu65a6a6ZOB5ZyI77yM5pS+572u6JK45Y+R55q/77yb54S25ZCO5YaN54K554eD6YWS57K+54Gv5Yqg54Ot77yM5bm25pCF5ouM77yM5b2T5pyJ6L6D5aSa5pm25L2T5p6Q5Ye65pe277yM5YGc5q2i5Yqg54Ot77yM5YCf5L2Z54Ot6JK45bmy77yO5omA5Lul5q2j56Gu55qE6aG65bqP5piv4pGi4pGg4pGh4pGj4pGk77yOPGJyPuaVhemAiUM8YnI+PC9wPg==
本课配套习题挑战模式4/5
单选题
难度系数：
4.
粗盐中除含有不溶性固体杂质外，还含有MgCl2、CaCl2等可溶性杂质．要除去粗盐中的MgCl2、CaCl2，选用试剂（均过量）及使用顺序正确的是（ ）
| A: 氢氧化钠溶液、碳酸钠溶液、稀盐酸 |
| B: 氢氧化钡溶液、碳酸钠溶液、稀硫酸 |
| C: 氢氧化钠溶液、稀盐酸、碳酸钠溶液 |
| D: 氢氧化钡溶液、稀硫酸、碳酸钠溶液 |
一次做对，真牛！
+5奖励规则>
- 提示1：PHA+5LuO55S156a755qE6KeS5bqm5YiG5p6Q57KX55uQ5Lit55qE5p2C6LSo5Y+v55+l77ya5rq25ray5Lit55qE5p2C6LSo56a75a2Q5Li66ZKZ56a75a2Q44CB6ZWB56a75a2Q44CB5qC55o2u6ZWB56a75a2Q55So5rCi5rCn5qC556a75a2Q5rKJ5reA77yM6ZKZ56a75a2Q55So56Kz6YW45qC556a75a2Q5rKJ5reA77yM6L+H5ruk6KaB5pS+5Zyo5omA5pyJ55qE5rKJ5reA5pON5L2c5LmL5ZCO77yM55So55uQ6YW45aSE55CG5rq25ray5Lit55qE56Kz6YW45qC556a75a2Q5ZKM5rCi5rCn5qC556a75a2Q6L+b6KGM5YiG5p6QPGJyPjwvcD4=
- 答案：QQ==
PHA+6Kej77yaQeOAgemmluWFiOimgeaKiueyl+ebkOa6tuS6juawtOW9ouaIkOa6tua2su+8jOeEtuWQjumVgeemu+WtkOeUqOawouawp+agueemu+WtkOayiea3gO+8jOWKoOWFpei/h+mHj+eahOawouawp+WMlumSoOWPr+S7peWwhumVgeemu+WtkOayiea3gO+8jOmSmeemu+WtkOeUqOeis+mFuOagueemu+WtkOayiea3gO+8jOmZpOmSmeemu+WtkOWKoOWFpeeis+mFuOmSoOi9rOWMluS4uuayiea3gO+8jOWGjei/m+ihjOi/h+a7pO+8jOacgOWQjuWGjeWKoOWFpeebkOmFuOmZpOWOu+WPjeW6lOWJqeS9meeahOawouawp+agueemu+WtkOWSjOeis+mFuOagueemu+WtkO+8jOacgOWQjue7j+iSuOWPkeaTjeS9nOW+l+WIsOi+g+e6r+WHgOeahOawr+WMlumSoO+8juaVhUHmraPnoa7vvJs8YnI+QuOAgeWKoOWFpeawouawp+WMlumSoeS8muW8leWFpemSoeemu+WtkO+8jOWKoOWFpeehq+mFuOS8muW8leWFpeehq+mFuOagueemu+WtkO+8jOacieaWsOeahOadgui0qOW8leWFpe+8jOaVhULplJnvvJs8YnI+Q+OAgeebkOmFuOW/hemhu+aUvuWcqOi/h+a7pOWQju+8jOWQpuWImeS6p+eUn+eahOayiea3gOWPiOiiq+a6tuino+S6hu+8jOaVhUPplJnvvJs8YnI+ROOAgeWKoOWFpeawouawp+WMlumSoeS8muW8leWFpemSoeemu+WtkO+8jOWKoOWFpeehq+mFuOS8muW8leWFpeehq+mFuOagueemu+WtkO+8jOacieaWsOeahOadgui0qOW8leWFpe+8jOaVhUTplJnvvI48YnI+5pWF6YCJQTxicj48L3A+
本课配套习题挑战模式5/5
单选题
难度系数：
5.
为了除去粗盐中的Ca2+、Mg2+、SO42-及泥砂，可将粗盐溶于水，然后进行下列五项操作①过滤；②加过量NaOH溶液；③加适量盐酸；④加过量Na2CO3溶液；⑤加过量BaCl2溶液．下列操作顺序中最合适的是（ ）
| A: ②④⑤①③ |
| B: ⑤④②③① |
| C: ⑤②④③① |
| D: ②⑤④①③ |
一次做对，真牛！
+5奖励规则>
- 提示1：PHA+5qC55o2u6ZWB56a75a2Q5Lya5LiO5rCi5rCn5qC556a75a2Q5ZKM56Kz6YW45qC556a75a2Q55Sf5oiQ5rKJ5reA77yM6ZKZ56a75a2Q5Lya5LiO56Kz6YW45qC556a75a2Q55Sf5oiQ5rKJ5reA77yM56Gr6YW45qC556a75a2Q5Lya5LiO6ZKh56a75a2Q55Sf5oiQ5rKJ5reA77yM5Yqg5YWl55uQ6YW45Y+v5Lul6Zmk5Y676L+H6YeP55qE56Kz6YW46ZKg5ZKM5rCi5rCn5YyW6ZKg562J6L+b6KGM5YiG5p6QPGJyPjwvcD4=
- 答案：RA==
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
