Knowra Barium hydroxide Barium hydroxide Barium hydroxide, Ba(OH)₂, is an inorganic base available as anhydrous material and hydrates. It reacts with acids and absorbs carbon dioxide, forming barium carbonate.
Barium hydroxide octahydrate : Ba(OH)₂·8H₂O is a crystalline hydrated form of barium hydroxide. This common hydrate releases water on heating and provides a practical route to anhydrous material.
Barium hydroxide test : A qualitative test that detects carbon dioxide by producing a cloudy barium carbonate suspension. Barium hydroxide solution turns cloudy when carbon dioxide forms insoluble barium carbonate.
Barium : Barium is a soft, reactive alkaline-earth metal with atomic number 56. Barium supplies the Ba²⁺ cation in barium hydroxide and its salts.
Sodium hydroxide : Sodium hydroxide, NaOH, is a highly soluble strong base used widely in chemical manufacture. Unlike sodium hydroxide, barium hydroxide introduces toxic barium ions and is less soluble.
Dissociation : Dissociation is the separation of a compound into ions or smaller particles, often in solution. In water, barium hydroxide separates into barium and hydroxide ions, accounting for its basicity.
Titration : Titration is a quantitative method that determines a solution’s concentration by reacting it with a measured reagent. Barium hydroxide can serve as a strong-base titrant, though carbonate uptake can affect its concentration.
Alkaline-earth metals : The alkaline-earth metals are Group 2 elements, characterized by two valence electrons and commonly divalent ions. Barium’s position in Group 2 explains its +2 oxidation state in the compound.
Calcium hydroxide : Calcium hydroxide, Ca(OH)₂, is a sparingly soluble alkaline-earth hydroxide known as slaked lime. It shares the Group 2 hydroxide pattern but uses calcium and has different solubility and hazards.
Neutralization : Neutralization is a reaction in which an acid and a base form water and a salt. Hydroxide ions from barium hydroxide consume acidity and produce barium salts.
Gravimetric analysis : Gravimetric analysis determines an amount of substance by measuring the mass of a purified solid. Barium hydroxide can precipitate selected anions as sparingly soluble barium salts for mass-based measurement.
Show all 21