What is the percentage yield of Mohrs salt (ammonium iron (II) sulfate)?
Hello again! I found a couple of references in my wanderings which might be of interest to you, one of which deals with the question above. I have no reason to think that the yield in the synthesis of Mohr’s salt, if carried out with due care and attention, should not be high – let’s say 90% or above. But the procedure stops with the salt in solution; you may obtain a sample by allowing it to crystallize, but much of the product will remain in solution. If you are interested in trying to improve the yield, you might reduce the volume further by boiling, preferably in an oxygen-free atmosphere to reduce oxidation of the ferrous salt, and re-crystallizing. I would do it in a series of steps, so that if anything go wrong you’ll only lose the last batch. http://www.chemistry-react.org/go/Faq/Fa… http://www.chemistry-react.
