Mineral acid
Inorganic acids that release hydrogen ions in water.
Mineral acids, also called inorganic acids, come from inorganic compounds, unlike organic acids which are acidic organic compounds. When dissolved in water, they all release hydrogen ions and form a conjugate base. Common examples include sulfuric acid, hydrochloric acid, and nitric acid—often referred to as bench acids. These acids range from extremely strong superacids like perchloric acid to very weak ones like boric acid. They generally dissolve well in water but not in organic solvents. In the chemical industry, mineral acids serve as raw materials for making both organic and inorganic chemicals, with large plants producing vast amounts of sulfuric, nitric, and hydrochloric acid for commercial use. Their corrosive nature also has direct applications; for instance, a dilute hydrochloric acid solution is used to remove deposits from inside boilers—a process called descaling—though precautions are taken to prevent the acid from damaging the boiler itself. Examples include hydrofluoric acid, hydrochloric acid, hydrobromic acid, hydroiodic acid, nitric acid, phosphoric acid, sulfuric acid, boric acid, perchloric acid, and hydrocyanic acid.
- field
- Chemistry
- known_for
- Forming hydrogen ions and conjugate bases in water; used as feedstocks and for corrosive properties
- examples
- Sulfuric acid, hydrochloric acid, nitric acid, hydrofluoric acid, phosphoric acid, boric acid, perchloric acid, hydrocyanic acid
Lore & Background
Mineral acids are derived from inorganic compounds and are distinct from organic acids. They are widely used in the chemical industry as feedstocks for synthesizing other chemicals, both organic and inorganic. Large quantities of sulfuric acid, nitric acid, and hydrochloric acid are manufactured for commercial use in large plants. These acids are also used directly for their corrosive properties; for example, a dilute solution of hydrochloric acid is used for removing deposits from the inside of boilers, a process known as descaling, with precautions taken to prevent corrosion of the boiler by the acid.
Reader's Guide
Mineral acids are fundamental to the chemical industry, serving as essential feedstocks for the synthesis of numerous other chemicals. Their ability to form hydrogen ions and conjugate bases in water makes them highly reactive and versatile. The most commonly used mineral acids—sulfuric acid, hydrochloric acid, and nitric acid—are produced in large quantities for commercial applications. Beyond synthesis, their corrosive properties are exploited in industrial processes such as descaling, where dilute hydrochloric acid removes boiler deposits. The range of mineral acids spans from superacids like perchloric acid to very weak acids like boric acid, highlighting their diversity. Their high solubility in water and low solubility in organic solvents further define their practical uses. Overall, mineral acids are indispensable in both organic and inorganic chemistry, driving production and maintenance across many sectors.
Did You Know?
- Mineral acids are derived from one or more inorganic compounds, unlike organic acids.
- All mineral acids form hydrogen ions and the conjugate base when dissolved in water.
- Commonly used mineral acids include sulfuric acid, hydrochloric acid, and nitric acid, known as bench acids.
- Mineral acids range from superacids (e.g., perchloric acid) to very weak ones (e.g., boric acid).
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