sulphuric

/sʌl'fjuərik/
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sulphuric

A scientist carefully pours sulphuric acid into a beaker.

Definition
  1. Adjective:
    • Relating to or containing sulfur: The word "sulphuric" describes something that is connected to the chemical element sulfur (S) or contains it in its composition.
    • Specifically denoting a compound where sulfur has a high valence: Most commonly, it refers to compounds where sulfur is in its +6 oxidation state, especially sulfuric acid.
Usage Examples
  • Adjective:
    • The laboratory handles various sulphuric compounds.
    • The industrial process involves sulphuric esters as intermediates.
    • They measured the concentration of the sulphuric solution.
Advanced Usage
  • "sulphuric acid": This is the most common and important usage. It refers to the strong, corrosive mineral acid with the formula H₂SO₄.
    • The battery contains a dilute solution of sulphuric acid.
    • Sulphuric acid production is a major chemical industry.
Variants and Related Words
  • Sulfuric: (Adjective) The standard American English spelling of "sulphuric". Both forms are chemically identical.
    • The label read "sulfuric acid".
  • Sulphur / Sulfur: (Noun) The chemical element (S) itself.
  • Sulphate / Sulfate: (Noun) A salt or ester of sulfuric acid (e.g., copper sulphate).
  • Sulphurous / Sulfurous: (Adjective) Relating to sulfur in a lower (+4) oxidation state, as in sulfurous acid (H₂SO₃).
Synonyms
  • Of sulfur: Pertaining to sulfur.
Notes on Spelling and Usage
  • The spelling "sulphuric" (with 'ph') is the traditional form used in British English and many other varieties of English.
  • The spelling "sulfuric" (with 'f') is the standard form in American English and is increasingly common in scientific and technical writing internationally due to the recommendations of organizations like IUPAC (International Union of Pure and Applied Chemistry).
  • There is no difference in meaning or pronunciation between the two spellings.
sulphuric

A scientist carefully pours sulphuric acid into a beaker.

Adjective
  1. of or relating to or containing sulfur
    • sulphuric esters