Aqua regia is a mixture of nitric acid and hydrochloric acid, Aqua regia is a yellow-orange (sometimes red) fuming liquid, so named by alchemists because it can dissolve the noble metals, though not all metals.Aqua regia dissolves noble metals, though neither its constituent acid will do so alone, because, in combination, each acid performs a different task. Nitric acid is a powerful oxidizer, which will actually dissolve a virtually undetectable amount of noble metals, forming noble metals ions. The hydrochloric acid provides a ready supply of chloride ions (Cl−), which react with the noble metals ions to produce anions, also in solution. To polish the gold ornaments the goldsmith use aquaregia to clean jewellery .One day Poonam went to a jewellery shop and asked the goldsmith to polish the old gold jewellery. Next day, when she brought the jewellery, she found that there was a slight loss in its weight .She lodged a complaint to the police about this incident. (a) During its investigation, the police seized the solution used by the goldsmith and sent It forensic lab.The lab technician detectedb) The composition of aqua regia is- (अम्लराज का सघटन क्या है )
c) Write name and symbol of two noble metals- ( किन्हीं दो उत्कृष्ट धातुओं के नाम व उनके प्रतीक लिखें )(d) The latin name of aqua regia is- (अम्लराज को लेटिन भाषा में कहते हैं)
e) The yellow-orange (sometimes red) and fuming nature of Aqua regia is a due to present of- (अम्ल राज का पीला नारंगी रंग व सधुम प्रवृत्ति का कारण है) traces of gold in it .why?
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- aqua regia is a mixture of nitric acid and hydrochloric acid . it melts the metals
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