|
|
|
|
|
| Author |
Message |
![[Post New]](/templates/default/images/icon_minipost_new.gif) 9 Jun 2007 21:11:02 IST
Accepted Answer [?]
![[Up]](/templates/default/images/icon_up.gif "[Up]")
|
|
|
NaNO3+H2SO4 ----> NaHSO4 + HNO3
6FeSO4 + 2 HNO3 + 3H2SO4 -----> 3Fe2(SO4)3 + 4H2O + 2NO
[Fe(H2O)6]SO4.H2O + NO -----> [Fe(H2O)5NO]SO4 + 2H2O
(Brown ring)
NO indeed replaces a water ligand, but by doing so, it is oxidized to a nitrosyl ligand, NO+. So, you get the compound [Fe(H2O)5NO]2+, but in this compound there is no NO ligand, but a NO+ ligand. The iron has oxidation state +1 in this complex, which is quite remarkable! Normally, iron has oxidation state +2 or +3.
On dilution, the nitrosyl complex is destroyed. It hydrolyses. The NO+ entity is not stable in water and is quickly converted to NO2- and/or HNO2. Iron in oxidation state +1 is not stable in water and so, the nitrite is reduced to gaseous NO.
|
Nikhila
Only those who dare to fail greatly can ever achieve greatly. |
this reply: 5 points
(with 1 
in 1 votes ) [?]
|
|
You have to be logged on to rate
|
|
|
|
|
|
|
|
|
|
Moderation Team
