Description of experiment
Below follows a plain text transcript of the selected experiment.
Needed compounds:
-----------------
hydrochloric acid : HCl
ferric sulfate : Fe2(SO4)3
Class:
------
elem=Fe
coordination
Summary:
--------
When ferric sulfate is dissolved in water, then an almost colorless liquid
is formed. On addition of chloride, a coordination complex (brown/yellow)
is formed.
Description:
------------
Add some solid ferric sulfate to some distilled water: The solid at first
does not dissolve. After one day, however, all of it is dissolved. The liquid
is clear and colorless.
Add a little amount of dilute HCl (appr. 10% by weight): The liquid becomes
yellow brown and clear. The chloride ions form a complex with the ferric
ions and make the liquid yellow/brown (the familiar color of an acidified
solution of ferric chloride).