Algor mortis definition at Dictionary.com, a free online dictionary with pronunciation, synonyms and translation. Look it up now!
The most abundant aluminum compounds are aluminum oxide and aluminum hydroxide, and these are water insoluble. Aluminum oxide may be present in water both in alkalic form (2Al 2 O 3 (s) + 6H + 3+ (aq) + 3H 2 O (l)) and in acidic form (2Al 2 O 3 (s) + 2OH - 2 - (aq) + H 2 O (l)).An example of a water soluble aluminum compound is aluminum sulphate with a water solubility of 370 g/L.iver water generally contains about 400 ppb of aluminum. Aluminum mainly occurs as Al 3+ (aq) under acidic conditions, and as Al(OH) 4 - (aq) under neutral to alkalic conditions. Other forms include AlOH 2 + (aq) en Al(OH) 3 (aq).
The alumen of the ancients, then, was not the same as the alum of the moderns. It was most commonly an iron sulfate, sometimes probably an aluminium sulfate, and usually a mixture of the two. But the ancients were unacquainted with our alum.