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Avinash Sinha
Copper
Asked: 2020-04-08T12:42:02+05:30 In:

Which liquid would you use to dissolve Gold?

Which liquid would you use to dissolve Gold?
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    3 Answers

    1. Iron

      Aquaregia....Which is nothing but the mixture of 1:3 ratio of Conc.HNO3 & HCl.

      Aquaregia.…Which is nothing but the mixture of 1:3 ratio of Conc.HNO3 & HCl.

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    2. Gold Metallurgist, Standard Provider (IS, ASTM, BS, ISO etc), Laboratory Equipment Suppliers,

      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 metal, Gold. 

      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 metal, Gold. 

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    3. Copper Metallurgist

      Aqua regia is also known as royal water, or nitro-muriatic acid (1789 name by Antoine Lavoisier) Aqua regia is a mixture of (HCl) and (HNO3) at a ratio of either 3:1 or 4:1. It is a reddish-orange or yellowish-orange fuming liquid. The term is a Latin phrase, meaning "king's water". The name reflectRead more

      Aqua regia is also known as royal water, or nitro-muriatic acid (1789 name by Antoine Lavoisier)

      Aqua regia is a mixture of (HCl) and (HNO3) at a ratio of either 3:1 or 4:1. It is a reddish-orange or yellowish-orange fuming liquid. The term is a Latin phrase, meaning “king’s water”. The name reflects the ability of aqua regia to dissolve the nobel metals gold, platinum, and palladium. Note aqua regia will not dissolve all noble metals. For example, iridium and tantalum are not dissolved

      Aqua Regia History

      Some records indicate a Muslim alchemist discovered aqua regia around 800 AD by mixing a salt with vitriol (sulfuric acid). Alchemists in the Middle Ages tried to use aqua regia to find the philospher’s stone. The process to make the acid was not described in chemistry literature until 1890.

      The most interesting story about aqua regia is about an event that occurred during World War II. When Germany invaded Denmark, the chemist George de Hevesy dissolved the Nobel Prize medals belonging to Max von Laue and James Franck into aqua regia. He did this to prevent the Nazis from taking the medals, which were made of gold. He put the solution of aqua regia and gold on the shelf in his lab at the Niels Bohr Institute, where it looked like just another jar of chemicals. de Hevesy returned to his laboratory when the war was over and reclaimed the jar. The recovered the gold and gave it to the Royal Swedish Academy of Sciences so the Nobel Foundation to re-make the Nobel prize medals to give to Laue and Franck.

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