Question: is fe oh 2 soluble?
Answer: Preparation and reactions. Iron(II) hydroxide is poorly soluble in water (1.43 × 10−3 g/L), or 1.59 × 10−5 mol/L. It precipitates from the reaction of iron(II) and hydroxide salts: FeSO4 + 2NaOH → Fe(OH)2 + Na2SO.