Acids are reactive, with even weak acids like vinegar interacting with other materials to wow students.
But strong acids can really put on a show. For example, aqua regia, or royal water, is a mixture of two strong acids- hydrochloric and nitric acids – that can dissolve gold, a noble metal. This reaction can be put to use.
Watch this video as Reactions employs some acid know-how to explain a chemistry detective story to sort real gold from its imposters.
Source: AMERICAN CHEMICAL SOCIETY
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