作者smoth (MASTER!! )
看板Chemistry
标题[问题] 问普化的题目
时间Sat Dec 24 19:39:35 2005
我想问几题清大原科的普化题目
1.考虑这个反应:3O2(g)<-->2O3(g). 在175度C和压力128torr.
O2和O3的混合平衡密度是0.168g/L.计算175度C时这个反应的Kp?
2.The solubility of benzoic acid(C6H5COOH) is 0.34g/100ml in water at 25度C
and 10g/100ml in benzene(C6H6) at 25度C. For a 1.0 molar solution of
benzoic acid in benzene , would the measured freezing-point depression
be equal to , greater than , or less than 5.12度C ?
3.How many possible sequences can be made for a polypeptide(多太)
with six different amino acids?
(A)720 (B)64 (C)36 (D)6 (E)none of these
4.Which one of the five oxides of chlorine is paramagnetic(顺磁的)?
(A)Cl2O (B)ClO2 (C)Cl2O4 (D)Cl2O6 (E)Cl2O7
5.In the best Lewis structure for ICl3 the formal charge on I is
(A)0 (B)+1 (C)-1 (D)+2 (E)-2
6.In which of the following compounds does every atom have eight electrons
in its valence shell?
(A)IF5 (B)C2H4 (C)SF4 (D)NO2 (E)KH
上大学後 就没碰过化学了
感谢大大帮我解答
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1996 John Smoltz 赛扬国度
W L ERA G GS CG SHO IP H R ER HR HBP BB SO IBB
24 8 2.94 35 35 6 2 253.2 199 93 83 19 2 55 276 3
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