dichromic acid
Definition
- Noun:
- A hypothetical acid: "Dichromic acid" refers to the chemical species with the formula H₂Cr₂O₇, which is not isolated as a pure substance. It is known to exist only in aqueous solution and is the parent acid from which dichromate salts are derived.
Usage
- Noun:
- Dichromic acid is an unstable compound.
- The solution contained dichromic acid ions.
- Salts like potassium dichromate are derived from dichromic acid.
Advanced Usage
- In chemical nomenclature: The term "dichromic acid" is used to describe the acidic form in equilibrium with dichromate anions in solution, particularly in the context of redox chemistry and acid-base reactions involving chromium(VI).
- The equilibrium between chromic acid, dichromic acid, and dichromate ions is pH-dependent.
Variants and Related Words
- Dichromate (n): A salt or ester of dichromic acid, containing the anion Cr₂O₇²⁻.
- Potassium dichromate is a common oxidizing agent.
Synonyms
- No direct common synonyms: In technical contexts, it may be referred to descriptively as "the parent acid of dichromates."
Related Phrases
- Not applicable: As a specific chemical term, "dichromic acid" does not commonly form phrasal verbs or idioms.
Related Idioms
- Not applicable: There are no common idioms associated with this technical chemical term.
Noun
-
the hypothetical acid (H2Cr2O7) from which dichromates are derived; known only in solution and in the form of dichromate salts
