bichromate

/'bai'kroumit/

Thân thiện

A chemist carefully weighs a sample of bichromate in the laboratory.

Definition

1. Noun:
   • A salt of dichromic acid: "Bichromate" refers to a chemical compound that is a salt derived from dichromic acid (H₂Cr₂O₇). It contains the divalent dichromate anion (Cr₂O₇²⁻).

Examples of Usage

• Noun:
  • Potassium bichromate is a common laboratory reagent.
  • The orange color of the solution indicated the presence of a bichromate.

Advanced Usage

• Technical Context: The term "bichromate" is largely synonymous with "dichromate" in modern chemical nomenclature, though "dichromate" is the more current and preferred IUPAC term. "Bichromate" often appears in older texts or specific industrial contexts.
  • The old formula called for sodium bichromate as an oxidizing agent.

Variants and Related Words

• Dichromate (n): The modern, systematic name for a salt containing the Cr₂O₇²⁻ ion.
  • Sodium dichromate is highly corrosive.
• Chromate (n): A salt containing the simpler CrO₄²⁻ anion, related to but distinct from bichromate/dichromate.

Synonyms

• Dichromate: The direct synonym in scientific terminology.

Notes on Meaning

• The prefix "bi-" in this historical chemical context indicates the presence of two chromium atoms in the anion, not a hydrogen ion (as "bi-" sometimes signifies in other acid salts like bicarbonate). Its use has been largely superseded by the prefix "di-".

Học thuật

Noun

1. a salt of the hypothetical dichromic acid

Từ đồng nghĩa

• dichromate