作者madcat09 (干，下雨)
看板TransBioChem
标题[化学] 台大95普化B和94普化A都有的某题（Ksp?）
时间Fri Jun 29 22:01:00 2007
台大95普化B的第18题，94普化A的第7题
Given that a saturated NaCl solution has a concentration of 5.4 M, which
of the following condition will cause NaCl to crystalize?
[NaCl molar mass=58.5, NaNO3 mass molar=85.00]
A. Addition of 1 M NaNo3 solution to 5.4 M NaCl solution.
B. Addition of 10 g of NaCl crystals to 100 ml of 3 M NaCl solution.
C. Addition of 6 M NaNo3 solution to saturated NaCl solution.
D. Addition of 1.0 g of NaNO3 crystals to 10.0 ml of 4.4 M NaCl solution.
答案似乎是C的样子，但我实在是不知道该如何下手
是不是该从题目推Ksp=(5.4)^2，然後设Cl阴离子为限量试剂完全沈淀再右移平衡？
但这样的话，A应该也会沈淀才是吧？
还请高手指点一下，谢谢
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