试题与答案

下列说法正确的是 A.水的离子积KW随温度、外加酸(碱)浓度的改变而改变 B.难

题型:选择题

题目:

下列说法正确的是

A.水的离子积KW随温度、外加酸(碱)浓度的改变而改变

B.难溶电解质作比较时,Ksp小的溶解度一定小

C.对已达平衡的反应,仅改变浓度,若平衡移动,则平衡常数(K)一定改变

D.Ksp只与难溶电解质的性质和温度有关,而与溶液中的离子浓度无关

答案:

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(47) The behavioral sciences have been slow to change partly because the explanatory items often seem to be directly observed and partly because other lands of explanations have been hard to find.

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