作者avantime (小狗兄)
看板Chemistry
标题[问题] 普化问题
时间Thu Feb 10 22:31:22 2011
1.
A silver concentration cell is set up at 25oC with 1.0 M AgNO3 in the right
compartment(区间) and 2.0 M NaCl along with exceed AgCl(s) in the left
compartment. The Ksp of AgCl = 2.0 X 10-10 Calculate the cell voltage (ε).
2.
which of the following period 3 chlorides would be expected to have the
highest melting point ?
MgCl2 AlCl3 SiCl4 PCl3 SCl2
3.
which of following ions could exist in only the high spin state in an
octahedral complex?
Cr2+ Mn4+ Fe3+ Co3+ Ni2+
4.
Name the three different classes (type) of hydride , and list some of their
important characteristics .
5.
which one have the smallest hydration(水合) energy(绝对值)?
F- Cl- Br- I- or all the same
以上5题可以帮忙解答吗? 感谢
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◆ From: 118.161.4.107
※ 编辑: avantime 来自: 118.161.4.107 (02/10 22:32)
1F：→ foxguy:第一题我也想知道..NaCl+AgCl可以当阳极吗QQ? 02/10 22:57
2F：→ foxguy:Q2 四氯化矽熔点最高，我猜是因为网状晶格和对称的关系.... 02/10 23:01
3F：→ foxguy:Q3 铁三价的价电子3d5为HS 02/10 23:04
4F：→ foxguy:Q5 I-的水合能最小，水合能正比於价数，反比於离子半径 02/10 23:06
5F：→ foxguy:有错请帮我指正= = 02/10 23:07
6F：→ yutsao:第一题应该是用Nernst eq吧 02/10 23:39
7F：→ giwee:Q2 是MgCl2 离子性最强 02/10 23:51
8F：推 nr:Q2= MgCl2 Q3= 电子算一算 看强场弱场就排出来了 02/11 00:23
9F：→ nr:Q4 Ionic hydrides, Covalent hydrides,Interstitial hydrides 02/11 00:25
10F：→ nr:google一下就有答案了 02/11 00:25
11F：→ avantime:关於第一题 我也知道是N~Eq 但是不会解 可以帮忙吗? 02/11 08:58
12F：→ avantime:关於其他4题感谢各位热心大大解惑 02/11 08:58
13F：→ avantime:另外 就是关於complex ion 强弱场 高低自旋那不太懂 02/11 08:59
14F：→ avantime:可以请大大对Q3更详细的解说吗 谢谢 02/11 09:00
第一题想到了 E=Eo+0.0591/1*logQ Q=(Ksp/2M)/1M 应该是这样吧?有错请指正
但第3题我看普化课本2本真的都看不懂答案怎做
八面体配位数要6 高自旋的配位基是弱场 但要怎麽从中心离子看出配位数 强弱场?
※ 编辑: avantime 来自: 114.43.11.77 (02/11 11:34)