Originally posted by xiasifeng at 2011-04-26 01:21:47:
1、Explain why MF(Metal F) shows increased solubility in acidic solution. Use an equilibrium reaction and the words pH and solubility in your answer.
我的理解是：解释金属F在酸性溶液中溶解度增大的原 ...

Originally posted by Jasminer at 2011-05-03 15:26:58:
受不了你们了……

MF（Metal F）表示任意金属的氟化物，显然本题考察的是氢氟酸盐溶解度与氢离子浓度的关系。

HA指代任意弱酸，NaA即它的钠盐。再说，有平衡常数Ka就够了，关心是哪种酸干嘛~~

Originally posted by Jasminer at 2011-05-03 15:32:30:
还有2楼

第二道题四则运算每一步都算错了，在帮助别人前确定自己不需要帮助吗？！

Originally posted by xiasifeng at 2011-05-03 23:05:46:
我很尴尬