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10/09/2021 7:50 pm
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What is aqua-regia? Name two special metals which are insoluble in common reagents but dissolve in aqua-regia.
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10/09/2021 7:51 pm
Aqua-regia is a freshly prepared mixture of one part of concentrated nitric acid and 3 parts of concentrated hydrochloric acid. Gold and platinum dissolve in aqua-regia.