x*o
发帖数: 1037 | 1 发信人: xmo (Enjoy ___ing), 信区: Chemistry
标 题: a middle school level question
发信站: The unknown SPACE (Thu Aug 15 11:27:32 2002), 站内信件
Dilute NiSO4 solution (~3mM)
Add several drops of Na2S solution (excess)
The solution will turn black and s | c*s
发帖数: 2145 | 2 NiS + 1/2 O2 +H2O -->Ni(OH)2 + S
I guess
【在 x*o 的大作中提到】
: 发信人: xmo (Enjoy ___ing), 信区: Chemistry
:
: 标 题: a middle school level question
:
: 发信站: The unknown SPACE (Thu Aug 15 11:27:32 2002), 站内信件
:
:
:
: Dilute NiSO4 solution (~3mM)
:
| b**s
发帖数: 589 | 3 I just searched a little while on internet, from the following homepage, We've
got to know that Ni(OH)2 is blue
http://www.chemistrymag.org/cji/2002/045025nc.htm (expt part, preparation)
And we also have S which is yellow,
At last , blue + yellow = green
Just a superficial deduction, not sure
【在 c*s 的大作中提到】
: NiS + 1/2 O2 +H2O -->Ni(OH)2 + S
: I guess
| c*s
发帖数: 2145 | 4 my deduction is based on the instability of Na2S in air...
We've
【在 b**s 的大作中提到】
: I just searched a little while on internet, from the following homepage, We've
: got to know that Ni(OH)2 is blue
: http://www.chemistrymag.org/cji/2002/045025nc.htm (expt part, preparation)
: And we also have S which is yellow,
: At last , blue + yellow = green
: Just a superficial deduction, not sure
|
|
