选择题 常温下，下列各组离子在指定溶液中能大量共存的是：
A．![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060704/yizhdy2apbl.png\" style=\"vertical-align:middle;\">的溶液中：![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060704/kswp3lyfwxb.png\" style=\"vertical-align:middle;\">、![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060704/50xoxugwkso.png\" style=\"vertical-align:middle;\">、![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060704/4ka0mgdnubf.png\" style=\"vertical-align:middle;\">、![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060704/t3hsfqj123a.png\" style=\"vertical-align:middle;\">
B．由水电离的![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060704/2znnuq5j2l2.png\" style=\"vertical-align:middle;\">的溶液中：![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060704/qpjeo43xfwj.png\" style=\"vertical-align:middle;\">、![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060704/nf15yglglxk.png\" style=\"vertical-align:middle;\">、![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060704/hjnhk54qb3e.png\" style=\"vertical-align:middle;\">、![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060704/fkxellefvqh.png\" style=\"vertical-align:middle;\">
C．![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060704/1mezrxzlbw3.png\" style=\"vertical-align:middle;\">的溶液中：![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060704/yrdz3tcdh0m.png\" style=\"vertical-align:middle;\">、![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060704/hcueoqmo15o.png\" style=\"vertical-align:middle;\">、![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060704/50xoxugwkso.png\" style=\"vertical-align:middle;\">、![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060704/zyjdvg5hmis.png\" style=\"vertical-align:middle;\">
D．![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060704/rxfnivfpetz.png\" style=\"vertical-align:middle;\">的溶液中：![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060704/dyz4vkglzze.png\" style=\"vertical-align:middle;\">、![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060704/ajimttvibae.png\" style=\"vertical-align:middle;\">、![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060704/ajllvr0ysuk.png\" style=\"vertical-align:middle;\">、![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060704/zhnughjgtff.png\" style=\"vertical-align:middle;\">
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选择题 常温下，下列各组离子在指定溶液中能大量共存的是：
A．![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060704/yizhdy2apbl.png\" style=\"vertical-align:middle;\">的溶液中：![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060704/kswp3lyfwxb.png\" style=\"vertical-align:middle;\">、![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060704/50xoxugwkso.png\" style=\"vertical-align:middle;\">、![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060704/4ka0mgdnubf.png\" style=\"vertical-align:middle;\">、![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060704/t3hsfqj123a.png\" style=\"vertical-align:middle;\">
B．由水电离的![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060704/2znnuq5j2l2.png\" style=\"vertical-align:middle;\">的溶液中：![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060704/qpjeo43xfwj.png\" style=\"vertical-align:middle;\">、![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060704/nf15yglglxk.png\" style=\"vertical-align:middle;\">、![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060704/hjnhk54qb3e.png\" style=\"vertical-align:middle;\">、![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060704/fkxellefvqh.png\" style=\"vertical-align:middle;\">
C．![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060704/1mezrxzlbw3.png\" style=\"vertical-align:middle;\">的溶液中：![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060704/yrdz3tcdh0m.png\" style=\"vertical-align:middle;\">、![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060704/hcueoqmo15o.png\" style=\"vertical-align:middle;\">、![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060704/50xoxugwkso.png\" style=\"vertical-align:middle;\">、![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060704/zyjdvg5hmis.png\" style=\"vertical-align:middle;\">
D．![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060704/rxfnivfpetz.png\" style=\"vertical-align:middle;\">的溶液中：![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060704/dyz4vkglzze.png\" style=\"vertical-align:middle;\">、![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060704/ajimttvibae.png\" style=\"vertical-align:middle;\">、![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060704/ajllvr0ysuk.png\" style=\"vertical-align:middle;\">、![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060704/zhnughjgtff.png\" style=\"vertical-align:middle;\">
本题答案：C
本题解析：A酸性的溶液中：![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060704/50xoxugwkso.png\" style=\"vertical-align:middle;\">结合H+具有强氧化性，可氧化![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060704/kswp3lyfwxb.png\" style=\"vertical-align:middle;\">
B．可看出水的电离受抑制，溶液可能呈酸或碱性：![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060704/fkxellefvqh.png\" style=\"vertical-align:middle;\">在酸性或碱性溶液中均不能大量存在，排除
C：由题意可知，溶液呈酸性，各离子可大量共存，符合题意
D：Fe3+与SCN—可生成络合物，不 能大量共存
故答案为C
本题所属考点：【离子共存】
本题难易程度：【一般】
A black plum is as sweet as a white. 黑梅白梅一样甜。
