The most useful and important vehicle for dissolving gold is aqua regia, (royal water), composed of two parts of hydrochloric (muriatic) acid, and one part of nitric (aquafortis). Gold is ...

Recovering gold from e-waste can be highly profitable ... into small pieces and dissolved them in a mix of nitric and hydrochloric acid, which created metal ions. When the researchers placed ...

If there’s a chemical with a cooler name than “fuming nitric acid,” we can’t think of it. Nearly pure nitric acid is useful stuff, especially if you’re in the business of making rocket ...

The process involved looks to recover copper and nitric acid from copper nitrate ... you can also take a look at recovering some gold as well.

FOR the analysis of the nitrate content of sea water, and for certain tests on alkaloids, it is necessary to have sulphuric acid free from all but the most minute amounts of nitric acid.