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.
if you add sodium hydroxide solution to a solution of an iron ii compound you get a green precipitate of iron ii hydroxide this is quite quickly oxidised by oxygen in the air to an orange brown precipitate of iron iii hydroxidethe half equation for the iron ii hydroxide is straightforwardstart with what you know you obviously need another hydroxide ion on the left hand side this is even more straightforward than the previous example to balance the charges add an electron to the right hand sidehe half equation for the iron ii hydroxide is straightforward start with what you know you obviously need another hydroxide ion on the left hand side this is even more straightforward than the previous example to balance the charges add an electron to the right hand side