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Question

Why is aqua regia called royal water?


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Solution

Aqua Regia:

  • Aqua Regia is a combination of three parts concentrated hydrochloric acid (HCl) and one part concentrated nitric acid (HNO3) that is acidic and fuming liquid.
  • It is used as a corrosive reagent that is used to clean glassware and it is also used in gold mines.

Royal Water:

  • It is also called royal water because it has the ability to dissolve noble metals like Gold, Platinum.
  • But it cannot dissolve all metals.

Hence, aqua regia is called royal water.


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