aqua regia

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English[edit]

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Etymology[edit]

Latin aqua regia, royal water, so named because it is one of the few solvents capable of dissolving noble metals.

Pronunciation[edit]

  • enPR: ā'kwə-rēʹjē-ə, IPA(key): /ˌeɪkwəˈriːdʒiə/
  • (file)

Noun[edit]

aqua regia (uncountable) (abbreviation A.R.)

  1. (obsolete, inorganic chemistry) A mixture of three parts concentrated hydrochloric acid to one part concentrated nitric acid.
    • 2005, D.J. Krus, Elements of Propositional Calculus
      Consider another example. 'If gold is placed in aqua regia then it dissolves.' Aqua regia is a mixture of nitric and hydrochloric acids that dissolves gold or platinum. Observation of gold dissolving in aqua regia (argument 1 1) lends credence to the above conditional statement.
      Not placing the gold into aqua regia and gold not dissolving (argument 0 0) does not disprove the truth-value of this conditional.

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