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【单选题】
10ml2.0×10-4 mol•L-1Na2SO4溶液中加入10ml2.0×10-4 mol•L-1的BaCl2溶液后,溶液中SO42-离子的浓度为[Ksp(BaSO4)=1.0×10-10] ( )
A.
>10-5 mol•L-1
B.
<10-5 mol•L-1
C.
10-5 mol•L-1
D.
10-4 mol•L-1
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相关题目：
【单选题】Every success comes with _____.
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加热后称量，看质量是否变化
查看完整题目与答案
【简答题】My father is 40. He is a good driver 1 a good father. My father likes 2 sports very much. Every morning, he 3 and runs in the People’s Park. He also plays basketball. He is so strong and healthy. He a...
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【单选题】下列有关实验的做法错误的是
A.
分液时，分液漏斗中的上层液体应由上口倒出
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用加热的方法可区分碳酸钠和碳酸氢钠两种固体
C.
用渗析的方法可除去Fe(OH) 3 胶体中混有的Cl －
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加入适量的NaOH可除去NaHCO 3 溶液中混有的少量Na 2 CO 3
查看完整题目与答案
【单选题】区分碳酸钠和碳酸氢钠固体的方法中（相同条件下），错误的是
A.
加热，观察是否有气体放出
B.
滴加稀盐酸，比较产生气体的快慢
C.
溶于水后滴加氯化钙溶液，看有无沉淀
D.
观察能否溶于水
查看完整题目与答案