what is aqua regia ? explain with example
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Aqua Regia Definition. Aqua regia is a mixture of hydrochloric acid (HCl) and nitric acid (HNO3) at a ratio of either 3:1 or 4:1. It is a reddish-orange or yellowish-orange fuming liquid. ... Note aqua regia will not dissolve all noble metals. For example, iridium and tantalum are not dissolved
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