tantalic acid
Very Rare (C2+)Technical/Scientific
Definition
Meaning
A weak acid containing tantalum in its pentavalent state, specifically the hydrated form of tantalum pentoxide (Ta2O5).
It refers to any acid derived from tantalum(V) oxide, though 'tantalic acid' commonly refers to the hydrated oxide itself, which is poorly soluble and used primarily in chemical synthesis and materials science.
Linguistics
Semantic Notes
This is a highly specific chemical term. In general chemistry contexts, it is often referred to more precisely as 'tantalum(V) oxide hydrate'. The term 'acid' is somewhat historical, as its acidic properties are very weak.
Dialectal Variation
British vs American Usage
Differences
No significant differences in usage; spelling and terminology are identical in both scientific communities.
Connotations
Purely technical, with no cultural or regional connotations.
Frequency
Equally rare and specialized in both UK and US English, confined to chemistry, materials science, and metallurgy texts.
Vocabulary
Collocations
Grammar
Valency Patterns
The synthesis produced tantalic acid.Tantalic acid was precipitated from the solution.Researchers analysed the sample for tantalic acid.Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Usage
Context Usage
Business
Not used.
Academic
Used in specialized chemistry and materials science papers discussing tantalum compounds, corrosion layers, or catalyst preparation.
Everyday
Never used.
Technical
Used in laboratory procedures, chemical patents, and specifications for electronic components (e.g., capacitors) where tantalum oxide layers are relevant.
Examples
By Part of Speech
adjective
British English
- The tantalic acid residue was filtered off.
- A tantalic acid coating provides corrosion resistance.
American English
- The tantalic acid precipitate was collected.
- Tantalic acid formation indicates oxidation.
Examples
By CEFR Level
- Tantalic acid is a compound of the metal tantalum.
- The mineral was found to contain traces of tantalic acid.
- Upon hydrolysis, tantalum pentachloride yields hydrated tantalic acid as a white precipitate.
- The dielectric layer was characterised as an amorphous form of tantalic acid.
Learning
Memory Aids
Mnemonic
Link to the mythological Tantalus, who was forever denied satisfaction, as 'tantalic acid' is an insoluble, unreactive substance derived from the hard-to-extract metal tantalum.
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Do not confuse with 'танталовая кислота' (the correct translation). Avoid literal translation of 'acid' as 'кислота' without the chemical context, as it is not a typical strong acid.
Common Mistakes
- Misspelling as 'tantalic' (correct) vs. 'tantalic' (incorrect). Confusing it with 'tartaric acid' (a completely different organic acid). Using it as a countable noun (e.g., 'a tantalic acid') is incorrect; it is a mass noun.
Practice
Quiz
Tantalic acid is primarily associated with which element?
FAQ
Frequently Asked Questions
No, it is a very weak acid and is essentially the hydrated form of tantalum oxide (Ta2O5·nH2O). Its 'acidic' properties are minimal.
It is used in the production of other tantalum compounds, in some types of catalysts, and the dehydrated form (tantalum pentoxide) is crucial in making capacitors for electronics.
Extremely unlikely. It is a specialist chemical used in advanced research and industrial settings, not in general education.
'Tantalic' refers to tantalum in its +5 oxidation state (Ta(V)), while 'tantalous' would refer to the +3 state (Ta(III)). Tantalic acid is far more common and stable.