1、选择题 下列各组离子在指定溶液中一定能大量共存的是
A．含有Fe3+的溶液中：Na+、AlO2一、C6H5-、I-
B．含有大量NO3-的溶液中：H+、Na+、Fe3+、Cl-
C．加入Al能放出H2的溶液中：Cl-、NO3-、SO42-、K+
D．由水电离出的c(OH—)＝l×10—13mol?L—1的溶液中：Na+、Ba2+、Cl-、NH4+
2、选择题 重金属离子具有毒性。实验室中有甲、乙两种重金属离子的废液，甲废液经化验呈碱性，主要有毒离子为Ba2+。如将甲、乙两废液按一定比例混合，毒性明显降低。则乙废液中可能含有的离子是(? )
A．Cu2+和SO42-
B．Cu2+和Cl-?
C．K+和SO42-
D．Ag+和NO3-
3、选择题 Fe3+、SO42-、Mg2+和X四种离子以物质的量之比1:2:1:1大量共存于同一溶液中，X可能是
[? ]
A.NH4+
B.OH-
C.CO32-
D.Cl-
4、选择题 下列各组离子在溶液中能大量共存的是
A．![]()
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B．![]()
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600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060704/gra302a2ft1.png\" style=\"vertical-align:middle;\">、![]()
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C．![]()
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600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060704/g3rtkzc5t24.png\" style=\"vertical-align:middle;\">
D．![]()
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600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060704/hkades1k5dw.png\" style=\"vertical-align:middle;\">、![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060704/0b4tfpurylv.png\" style=\"vertical-align:middle;\">
5、选择题 下列各组离子，能在溶液中大量共存的是（ ）
A．Cl-、K+、SO42-
B．Fe3+、Na+、OH-
C．Ag+、Cl-、NO3-
D．H+、Na+、CO32-
