作者isconnie (CC)
看板TransBioChem
标题[问题] 台大普化95.98 B.C卷
时间Sun Jul 4 16:49:57 2010
95C
17.Choose the element whose ion has the largest concentration inside a human
cell.
(a)Li (b)Na (c)K (d)Rb (e)Cs
A:c
98B
20.Which of the following atoms would be most reactive with water at room
temperature?
(a)K (b)Ba (c)Mg (d)Ca (e)Li
A:a
以上两题在版上对完答案後，发现答案都是K，我两题都写错@@不晓得各是什麽原因...
还有关於一个溶解度的问题
94C
7.Which one of the following compounds is most soluble in water?
(a)PbCl2 (b)Pb(ClO4)2 (c)Pb(OH)2 (d)PbSO4 (e)PbS
A:b
98C
18.Rank the following compounds according to increasing solubility in water.
I. CH3-CH2-CH2-CH3
II. CH3-CH2-O-CH2-CH3
III. CH3-CH2-OH
IV. CH3-OH
(a) I < III < IV < II
(b) I < II < IV < III
(c) III < IV < II < I
(d) I < II < III < IV
(e) None is correct
A: d
溶解度的问题有时候写对有时候写错
98的排序还可以用比较去做删去法 所以勉强写对
但94的就不晓得原因 是因为原子数比较多吗?
麻烦版友帮忙解惑一下!! 感恩!!
--
※ 发信站: 批踢踢实业坊(ptt.cc)
◆ From: 119.77.222.54
※ 编辑: isconnie 来自: 119.77.222.54 (07/04 16:51)
1F：→ pterome:变相考沈淀表... 07/04 17:12
2F：→ pterome:Na K 体内谁多 男判断... 98B 答案可能错 见活性表 07/04 17:16
3F：→ pterome:沈淀表不备 必有报应 07/04 17:17
4F：→ biup2:Cs>Rb>K>Na>Li ? 07/04 18:55
5F：→ biup2:应该没背错吧? 07/04 18:56
6F：推 kiwilu:这是什麽表? 07/04 23:19
7F：→ biup2:这是活性，我一直记得Cs是活性最大的 07/05 00:13
8F：→ biup2:似乎是我错了Li>K、Rb、Cs>Na 07/05 00:20
9F：推 tdjpl:一二题是常识吧,第一题是神经传导,第二题用活性表 07/08 00:56