选择题 某无色透明的酸性溶液中能大量共存的一组离子是
A．![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060704/vtotva5xxe5.png\" style=\"vertical-align:middle;\">、![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060704/5me1d0y51o0.png\" style=\"vertical-align:middle;\">、Al3+、Cl-
B．Na+、![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060704/4s5olqoxcu4.png\" style=\"vertical-align:middle;\">、K+、![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060704/xptly4imtsa.png\" style=\"vertical-align:middle;\">
C．![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060704/5ip2jun5oko.png\" style=\"vertical-align:middle;\">、K+、![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060704/xptly4imtsa.png\" style=\"vertical-align:middle;\">、Na+
D．Mg2+、Na+、![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060704/xptly4imtsa.png\" style=\"vertical-align:middle;\">、![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060704/gkmxgu50yab.png\" style=\"vertical-align:middle;\">
选择题 某无色透明的酸性溶液中能大量共存的一组离子是
A．![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060704/vtotva5xxe5.png\" style=\"vertical-align:middle;\">、![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060704/5me1d0y51o0.png\" style=\"vertical-align:middle;\">、Al3+、Cl-
B．N a+、![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060704/4s5olqoxcu4.png\" style=\"vertical-align:middle;\">、K+、![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060704/xptly4imtsa.png\" style=\"vertical-align:middle;\">
C．![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060704/5ip2jun5oko.png\" style=\"vertical-align:middle;\">、K+、![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060704/xptly4imtsa.png\" style=\"vertical-align:middle;\">、Na+
D．Mg2+、Na+、![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060704/xptly4imtsa.png\" style=\"vertical-align:middle;\">、![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060704/gkmxgu50yab.png\" style=\"vertical-align:middle;\">
本题答案：D
本题解析：
试题分析：因为![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060704/5ip2jun5oko.png\" style=\"vertical-align:middle;\">显示紫红色,而溶液是无色透明的,所以可以排除C选项;弱酸的酸根离子在酸性溶液中可以和H+反应生成相应的弱酸,所以![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060704/5me1d0y51o0.png\" style=\"vertical-align:middle;\">和H![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060704/5me1d0y51o0.png\" style=\"vertical-align:middle;\">不能在此溶液中大量共存,其反应的离子方程式分别为![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060704/5me1d0y51o0.png\" style=\"vertical-align:middle;\">+2H+====H2O+CO2↑、![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060704/4s5olqoxcu4.png\" style=\"vertical-align:middle;\">+H+====H2O+CO2↑,排除A和B选项。
考点：离子反应
本题所属考点：【离子共存】
本题难易程度：【一般】
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