page_title: Aqua regia
hierarchical_section_title: Aqua regia
caption_attribution_description: Español: Agua regia utilizada para limpiar tubos de RMN en:Aqua regia used to clean en:NMR tubes
context_page_description: Aqua regia is a mixture of nitric acid and hydrochloric acid, optimally in a molar ratio of 1:3. Aqua regia is a yellow-orange fuming liquid, so named by alchemists because it can dissolve the noble metals, gold and platinum, though not all metals.
context_section_description: Aqua regia (/ˈreɪɡiə, ˈriːdʒiə/; from Latin, lit. "regal water" or "king's water") is a mixture of nitric acid and hydrochloric acid, optimally in a molar ratio of 1:3. Aqua regia is a yellow-orange (sometimes red) fuming liquid, so named by alchemists because it can dissolve the noble metals, gold and platinum, though not all metals.
caption: Freshly prepared aqua regia is colorless, but it turns orange within seconds. Here, fresh aqua regia has been added to these NMR tubes to remove all traces of organic material.
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