Precipitation reaction. Iron (III) hydroxide (brown) being precipitated from a solution by the addition of sodium hydroxide from a dropper (top). Precipitation occurs when an insoluble salt is formed by a reaction. In this case, a solution of iron (III) chloride (FeCl3, yellow) reacts with the sodium hydroxide (NaOH) to form insoluble iron (III) hydroxide (Fe(OH)3) and soluble sodium chloride, or table salt (NaCl).
Model release not required. Property release not required.