calcium hydroxide
Học thuậtThân thiện
Definition
- Noun:
- A chemical compound with the formula Ca(OH)₂: A white, powdery, slightly soluble inorganic base produced by reacting calcium oxide (quicklime) with water. It is also known as slaked lime or hydrated lime.
Usage
- As a common noun: "Calcium hydroxide" is used to refer to the specific chemical substance itself.
- In industrial, construction, and chemical contexts: The term is used precisely to denote this compound in processes like water treatment, mortar preparation, and chemical synthesis.
Examples
- Noun:
- The mason added calcium hydroxide to the sand to make traditional lime mortar.
- Calcium hydroxide is used in the food industry to process corn for tortillas.
- A saturated solution of calcium hydroxide in water is called limewater.
Advanced Usage
- "Slaked lime": A common synonym for calcium hydroxide, emphasizing its production process.
- Farmers often use slaked lime to reduce soil acidity.
- In chemical equations: Represented by its formula, Ca(OH)₂.
- The reaction CaO + H₂O → Ca(OH)₂ is highly exothermic.
Variants and Related Words
- Lime (noun): A broad term that can refer to calcium oxide (quicklime), calcium hydroxide (slaked/hydrated lime), or even calcium carbonate in agricultural contexts. Requires careful attention to context.
- Hydrated lime (noun): Another synonym for calcium hydroxide.
- Limewater (noun): A dilute aqueous solution of calcium hydroxide.
Synonyms
- Slaked lime
- Hydrated lime
- Pickling lime (when used in food preservation)
- Caustic lime (archaic)
Related Phrases
- Lime slurry: A suspension of calcium hydroxide in water.
- The water treatment plant uses a lime slurry to adjust pH.
- Lime mortar: A building material made from calcium hydroxide, sand, and water.
- The restoration of the historic building required authentic lime mortar.
Noun
- a caustic substance produced by heating limestone