Essentially, yeah. Nitric acid is a very powerful oxidizing agent and allows for the ionization of gold so a bit will enter solution. HCl drives the reaction forward by giving Cl ions which stabilize the gold in solution as the AuCl4- complex
Nitric actually is reduced to NO2 and H2O, no hydrogen gas is formed.
Would that, for example, allow for copper to react with sulfuric acid to produce copper sulfate? I vaguely remember doing a reaction in intro where copper salts were produced and NO2 was released
Research the iodine clock reaction. Requires hydrogen peroxide, iodine tincture and ascorbic acid, all of which are available cheaply from your local pharmacy or even grocery store.
I don't like people insulting my field of study as much as the next person, but I'm calling your bullshit.
Anhydrous copper sulfate gives a nice color when hydrated.
Yep, totally could work. With ntiric alone it forms NO2 and -OH, so adding sulfuric would neutralize the base and form water, leaving SO42- to form salts with the copper.
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And if you let the NO2 gas pass throught water, you'll get mix of nitric and nitrous acid.
This is actually part of Ostwald process.
Bump