âIt would have been impossible to grow up in the South from 1890 to World War I and not have heard or read [the lost cause version of history] many times over as the common sense of white Southern self-understanding.â
The iron(II) hydroxide reduces these ions to elemental selenium, which is insoluble in water and precipitates out. Note: pK sp = 15.097 where p is the-log and K sp is the Solubility Product Constant. This means it has a low tendency to dissolve, but is not entirely insoluble.ron(II) hydroxide. Iron(II) hydroxide or ferrous hydroxide is a compound with the formula Fe(OH) 2. It is produced when iron(II) ions, from a compound such as iron(II) sulfate, react with hydroxide ions. Iron(II) hydroxide itself is practically white, but even traces of oxygen impart a greenish tinge.
This explains the formation of rust when insoluble iron is exposed to the atmosphere, lowering the pH in the water and oxidizing the iron. Bacteria can produce insoluble iron compounds like ferric hydroxide or iron carbonate as a waste product, which can end up as film on fixtures and appliances.nsoluble, commonly called red water iron, is immediately apparent upon pouring a glass. The water can appear rusty or yellowish in color. This happens because the iron is being oxidized by the atmosphere and forming ferric hydroxide-also known as rust. Soluble iron is also called clear water iron.