Question
Download Solution PDFWhich of the following is used for dissolution of gold?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFKey Points
- Aqua-regia is a highly corrosive mixture of nitric acid and hydrochloric acid in a 1:3 ratio.
- It is one of the few substances that can dissolve gold and platinum.
- The name "aqua-regia" translates to "royal water" in Latin, due to its ability to dissolve noble metals like gold.
- It is commonly used in the refining process of gold and in analytical chemistry.
Additional Information
- Gold is a noble metal, which means it is resistant to corrosion and oxidation in moist air.
- Other substances like sodium hydroxide, sulphuric acid, and ammonium hydroxide are not capable of dissolving gold.
- Aqua-regia must be handled with care due to its highly reactive and corrosive nature.
- It is widely used in laboratories for cleaning and for the preparation of gold chloride.
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