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yeshenghua

木虫 (正式写手)

[求助] 一道电化学考研题,求解答。

相同温度下,无限稀时HCl、KCl、CdCl2三种溶液,下列说法不正确的是:
A氯离子淌度相同
B氯离子迁移数都相同
C氯离子摩尔电导率都相同
D氯离子迁移速率不一定相同

答案是B
AC明白,主要是D选项,求高手指导一下,谢谢。
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zqxcyj

木虫 (著名写手)

【答案】应助回帖

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感谢参与,应助指数 +1
地狱血幽灵: 金币+1, 欢迎常来 2012-11-09 15:35:16
yeshenghua: 金币+3, ★★★很有帮助 2012-11-09 16:25:53
因为迁移速率除与离子本性和溶剂有关外,还与电位梯度有关,若电位梯度相同,则氯离子迁移速率相同,否则,不一定相同。
2楼2012-11-09 14:10:33
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