Sciencemadness Discussion Board
Not logged in [Login ]
Go To Bottom

Printable Version  
Author: Subject: Decomposition of FeCl3 on heating
Crypto
Hazard to Self
**




Posts: 50
Registered: 18-11-2013
Member Is Offline

Mood: No Mood

[*] posted on 25-12-2013 at 04:25
Decomposition of FeCl3 on heating


Hydrated ferric chloride decomposes on heating but what is the decomposition product and what gas is released? I stumbled on two different answears and I don't know which one is correct. One says that FeCl3 decomposes to FeCl2 and releases Cl, and the other that it undergoes decomposition to Fe2O3 and releases HCl.
View user's profile View All Posts By User
Random
International Hazard
*****




Posts: 1120
Registered: 7-5-2010
Location: In ur closet
Member Is Offline

Mood: Energetic

[*] posted on 25-12-2013 at 05:20


Only way I can see HCl being released is through FeCl3 hydrates.
View user's profile View All Posts By User
Zyklon-A
International Hazard
*****




Posts: 1547
Registered: 26-11-2013
Member Is Offline

Mood: Fluorine radical

[*] posted on 25-12-2013 at 07:19


Ya, Almost all chloride hydrates that decompose, give off HCl.



View user's profile View All Posts By User
Zyklon-A
International Hazard
*****




Posts: 1547
Registered: 26-11-2013
Member Is Offline

Mood: Fluorine radical

[*] posted on 25-12-2013 at 10:01


2 FeCl3:6H2O-->Fe2O3+6HCl



View user's profile View All Posts By User
Crypto
Hazard to Self
**




Posts: 50
Registered: 18-11-2013
Member Is Offline

Mood: No Mood

[*] posted on 26-12-2013 at 05:34


Wikipedia says that at 280 °C, hexahydrate undergoes partial decomposition to FeCl2 + Cl2

https://en.wikipedia.org/wiki/Iron(III)_chloride
View user's profile View All Posts By User
blogfast25
International Hazard
*****




Posts: 10562
Registered: 3-2-2008
Location: Neverland
Member Is Offline

Mood: No Mood

[*] posted on 26-12-2013 at 07:14


What you obtain does indeed depend on temperature and duration of heating. In general, what you obtain is a 'mess': it maybe mainly Fe2O3 but often will still contain water and chloride, possibly also FeCl2.

Heating FeCl3 hexahydrate just isn't a very useful thing to do.




View user's profile View All Posts By User

  Go To Top