Description of experiment
Below follows a plain text transcript of the selected experiment.
Needed compounds:
-----------------
sulphur : S8
sodium sulfide : Na2S . 3H2O
Class:
------
elem=S
polymerization
Summary:
--------
Sulphur dissolves in a solution of a sulfide. Polysulfides are formed.
Description:
------------
Dissolve some sodium sulfide (technical quality) in water: The liquid is
almost colorless (faint yellow color) and clear.
Add some sulphur: The sulphur slowly dissolves. The color of the liquid
becomes intense yellow. The smell of hydrogen sulfide becomes less strong,
but it does not disappear.