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Aqua Regia Formula

2018822aqua regia often abbreviated as ar is a mixture of hydrochloric acid and nitric acid capable of dissolving many noble metals like gold, platinum and palladiumere are a number of metals that resists aqua regia, they are titanium, iridium, ruthenium, tantalum, niobium, hafnium, osmium, rhodium and tungstenme alloys with high amounts of silver is also resistant to aqua regia as there.