1、选择题 下列各组离子在指定条件下一定不能大量共存的是
A．能使红色石蕊试纸变蓝的溶液中：Na＋、K＋、CO32－、NO3－、AlO2－
B．c(H＋)＝0.1 mol/L的溶液中：Cu2＋、Al3＋、SO42—、NO3－
C．在加入铝粉后能产生氢气的溶液中：NH4＋、Fe2＋、SO42－、NO3－
D．含大量OH－的溶液中：CO32－、Cl－、F－、K＋
2、选择题 下列各组离子在给定条件下能大量共存的是（ ）
A．在pH=1溶液中：NH4+、K+、ClO-、Cl-
B．有SO42-存在的溶液中：Na+、Mg2+、Ca2+、I-
C．有NO3-存在的强酸性溶液中：NH4+、Ba2+、Fe2+、Br-
D．在c（H+）=1.0×10-13mol/L的溶液中：Na+、S2-、AlO2-、SO42-
3、选择题 下列各组离子在水溶液中能够大量共存的是
A．Ca2+、SO42-、CO32-
B．Na+、C1-、OH-
C．NH4+、C1-、-SO42-
D．H+、CO32-、NO3-
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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C．![]()
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D．![]()
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5、选择题 SO2的烟气会形成酸雨，工业上常利用Na2SO3溶液作为吸收液脱除烟气中的SO2。随着SO2的吸收，吸收液的pH不断变化。下列粒子浓度关系一定正确的是
A．Na2SO3溶液中存在：c(Na+)>c(SO32-)>c(H2SO3)>c(HSO3-)
B．已知NaHSO3溶液pH<7，该溶液中：c(Na+)>c(HSO3-)>c(H2SO3) >c(SO32-)
C．当吸收液呈中性时：c(Na+)=2 c(SO32-)+c(HSO3-)
D．当吸收液呈酸性时：c(Na+)=c(SO32-)+c(HSO3-)+c(H2SO3)
