ऐक्वा रेगिया (Aqua Regia) का मिश्रण होता है

Discover the powerful chemical composition of Aqua Regia, a highly corrosive mixture of concentrated nitric acid and hydrochloric acid in a 1:3 molar ratio. Learn how this unique blend dissolves noble metals like gold and platinum, its applications, and safety precautions.

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ऐक्वा रेगिया (Aqua Regia) का मिश्रण होता है

सांद्र नाइट्रिक अम्ल (HNO₃) और 3 भाग सांद्र हाइड्रोक्लोरिक अम्ल (HCl)

Questions Asked

What is Aqua Regia?
Aqua Regia (Latin for 'royal water') is a highly corrosive, fuming yellow or reddish liquid, renowned for its unique ability to dissolve noble metals like gold and platinum, which are otherwise resistant to individual acids.
What is Aqua Regia a mixture of?
Aqua Regia is a fresh mixture of two highly concentrated acids: nitric acid (HNO₃) and hydrochloric acid (HCl).
What is the specific ratio of acids in Aqua Regia?
The typical molar ratio for Aqua Regia is 1 part concentrated nitric acid to 3 parts concentrated hydrochloric acid (1 HNO₃ : 3 HCl).
Why is Aqua Regia able to dissolve gold and platinum?
Individually, neither nitric acid nor hydrochloric acid can dissolve gold. However, in Aqua Regia, nitric acid acts as a powerful oxidizing agent, forming gold ions. Simultaneously, hydrochloric acid provides chloride ions which react with the gold ions to form tetrachloroaurate(III) anions, stabilizing the gold in solution and allowing more gold to be oxidized.
What are the common uses of Aqua Regia?
Aqua Regia is primarily used in gold refining, etching, and in specific laboratory applications where the dissolution of noble metals is required. It's also utilized in the purification of platinum group metals and in certain analytical procedures.
Is Aqua Regia safe to handle?
No, Aqua Regia is extremely dangerous due to its highly corrosive and oxidizing properties. It can cause severe burns upon contact with skin and tissues, and its fumes are toxic. It must only be handled by trained professionals in a well-ventilated fume hood with appropriate personal protective equipment (PPE).

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