ferrocyanic acid
Học thuậtThân thiện
Definition
Noun: * A chemical compound: Ferrocyanic acid is an unstable, white, crystalline inorganic acid with the formula H₄[Fe(CN)₆]. It is not found in a pure state but is known in solution or as salts (ferrocyanides).
Usage
Ferrocyanic acid is a technical term used almost exclusively in chemistry. It refers to the hypothetical, free acid form derived from ferrocyanide salts. * Ferrocyanic acid is too unstable to be isolated in pure form. * The solution behaves as if ferrocyanic acid were present.
Advanced Usage
- Chemical Context: The term is primarily used when discussing the properties, formation, or reactions of ferrocyanide ions in acidic conditions. For example: "Upon acidification, the ferrocyanide salt yields in solution."
Variants and Related Words
- Ferrocyanide (noun): A salt containing the [Fe(CN)₆]⁴⁻ anion, such as potassium ferrocyanide. These are stable compounds from which the acid is derived.
- Hydroferrocyanic Acid: An alternative name for the same compound.
Synonyms
- Hydroferrocyanic acid
- Tetrahydrogen hexacyanoferrate(II) (systematic IUPAC name)
Notes on Meaning
This term has a single, precise meaning in inorganic chemistry. It does not have idioms, phrasal verbs, or common metaphorical uses due to its highly specialized nature.
Noun
- a white unstable acid formed from ferrocyanide salts