ethanoate

Thân thiện

A student adds sodium ethanoate to a solution in a chemistry experiment.

Definition

1. Noun:
   • A salt or ester of acetic acid: In chemistry, 'ethanoate' refers to a compound formed when the hydrogen of acetic acid is replaced by a metal (forming a salt) or by an organic group (forming an ester). It is the official IUPAC name for what is commonly called an acetate.

Examples of Usage

• Noun:
  • Sodium ethanoate is commonly used as a buffer in laboratory experiments.
  • The ester, methyl ethanoate, has a fruity smell and is used in flavorings.

Advanced Usage

• In chemical nomenclature: The term 'ethanoate' is systematically used in IUPAC naming to denote the anion (CH₃COO⁻) or the ester group derived from ethanoic acid (acetic acid).
  • The compound is correctly named potassium ethanoate, not potassium acetate, in strict systematic nomenclature.

Variants and Related Words

• Acetate (n): The common, traditional name for an ethanoate.
  • Cellulose acetate is a synthetic polymer.
• Ethanoic acid (n): The systematic IUPAC name for acetic acid (CH₃COOH), from which ethanoates are derived.

Synonyms

• Acetate: The traditional and widely used synonym in both industrial and common contexts.

Related Phrases

• Ethanoate ion: Refers specifically to the anion (CH₃COO⁻) present in salts and in solution.
  • The ethanoate ion acts as a weak base in aqueous solution.

Học thuật

Noun

1. a salt or ester of acetic acid

Từ đồng nghĩa

• acetate