barium hydroxide
C1/C2 (Technical/Scientific)Technical/Scientific
Definition
Meaning
A chemical compound with the formula Ba(OH)₂, used as a strong base in laboratories and industry.
In chemistry, a white granular solid that is soluble in water, forming a strongly alkaline solution; historically used in sugar refining and as a precursor to other barium compounds.
Linguistics
Semantic Notes
A compound term where 'barium' specifies the metallic element and 'hydroxide' denotes the OH⁻ ionic group. It is a hyponym of 'base' and 'alkali' in chemical taxonomy.
Dialectal Variation
British vs American Usage
Differences
No significant lexical differences; potential minor spelling preference for 'ise/ize' in derived verbs (e.g., 'neutralise' vs. 'neutralize') in surrounding text.
Connotations
Purely technical with identical scientific meaning in both varieties.
Frequency
Equally low-frequency outside of chemical, industrial, or academic contexts in both regions.
Vocabulary
Collocations
Grammar
Valency Patterns
[Substance] reacts with barium hydroxide to form [Product].Barium hydroxide is added to [Acid/Solution].Vocabulary
Synonyms
Neutral
Weak
Vocabulary
Antonyms
Usage
Context Usage
Business
Rare; might appear in procurement lists or safety data sheets for chemical suppliers.
Academic
Common in chemistry textbooks, lab manuals, and research papers on inorganic synthesis or titration.
Everyday
Virtually never used.
Technical
Standard term in chemical engineering, laboratory procedures, and industrial process descriptions.
Examples
By Part of Speech
verb
British English
- The solution was then barium hydroxided to raise the pH.
- They barium-hydroxidised the acidic waste.
American English
- The mixture was treated with barium hydroxide to neutralise it.
- We need to barium-hydroxidize the effluent.
adjective
British English
- The barium hydroxide reagent was prepared fresh.
- A barium-hydroxide-catalysed reaction.
American English
- The barium hydroxide solution was standardized.
- Barium-hydroxide-treated samples showed less acidity.
Examples
By CEFR Level
- Barium hydroxide is a chemical.
- This substance is called barium hydroxide.
- Barium hydroxide is used to test for carbon dioxide because it forms a white precipitate.
- The laboratory ordered more barium hydroxide for the experiments.
- The aqueous barium hydroxide solution was titrated against a standardised hydrochloric acid to determine its exact concentration.
- Upon adding barium hydroxide to the sulphate-containing solution, a dense white precipitate of barium sulphate formed immediately.
Learning
Memory Aids
Mnemonic
Think: 'Ba(OH)₂' – Barium holds two Hydroxide friends (the subscript 2).
Conceptual Metaphor
A CHEMICAL TOOL (for neutralisation, precipitation).
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Direct calque 'гидроксид бария' is correct and poses no trap.
Common Mistakes
- Misspelling as 'barium hydroxid' or 'bariam hydroxide'.
- Confusing it with barium carbonate or barium chloride.
Practice
Quiz
Barium hydroxide is primarily classified as a:
FAQ
Frequently Asked Questions
Yes, it is toxic and corrosive, requiring proper safety handling (gloves, goggles) in the laboratory.
Common uses include as a laboratory base in titrations, in the production of other barium compounds, and historically in sugar refining to remove impurities.
Yes, it is moderately soluble in water, and its solution is highly alkaline.
Barium oxide (BaO) is the anhydrous oxide of barium, which reacts with water to form barium hydroxide (Ba(OH)₂).