[試題] 97下 許益瑞 普通化學甲下 第二次小考
課程名稱︰普通化學甲下
課程性質︰必帶
課程教師︰許益瑞
開課學院：
開課系所︰農業化學系 大氣科學系 地質科學系
考試日期（年月日）︰98年3月27日
考試時限（分鐘）：約30分鐘，有延長
是否需發放獎勵金：是
（如未明確表示，則不予發放）
試題 :
1.
(a)An aqueous solution of Fe(NO ) has only a pale color, but an aqueous
3 3
solution of K [Fe(CN) ] is bright red. Do you expect a solution of
3 6
K [FeF ] to be brightly colored or pale? Explain your reasoning. (30 points)
3 6
(b)Would you predict a solution of K [HgI ] to be colored or colorless?
2 4
Explain. (10 points)
2.Among the evidence used by Werner to establish the nature of octahedral
+
coordination complexes were halide precipitation reaction with Ag (aq).
Only those halides not directly complexed to the metal ion could be
precipitated. (a)How many moles of AgCl per mole of chloro compound would
be expected for the following salts? (b)Give the proper systematic name
for the three compounds. (c)Please describe the geometric isomers in these
compounds.
(i)Co(NH ) Cl (ii)Co(NH ) Cl (iii)Co(NH ) Cl (40 points)
3 3 3 3 4 3 3 6 3
2+
3.Predict the number of unpaired electrons for [Ni(en) ] based on both
2
tetrahedral and square-planar structures, assuming that en acts as a
strong field ligand. Based on the correlation between spin and stability,
which geometry do you predict will be preferred? (40 points)
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