What does "calx" mean in oxidation reduction reactions?
1 Answer
May 20, 2015
It is a term commonly used in reactions where you are roasting a metal in a place with excess oxygen (I did this in an Inorganic Chemistry lab in a hood).
Basically you can put a metal in a crucible on a wire mesh (or clay triangle, like in the diagram) on a ring clamp on a ring stand over a bunsen burner, and heat it until it forms a purer substance. Calx is the remaining ashy residue.
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You have to keep watch over it though, and if it goes for too long, the pure ore would be burned too and you'll just have soot.
