Salt & Vinegar method | Gold Refining & Metal Extraction Forum
like if you add sodium hydroxide (NaOH) to hydrochloric acid (HCl) to neutralize the acid to a Ph of 7 you end up with salt water --- NaOH + HCL goes to NaCl (table salt) + H2O = salt water --- evaporate the water off & you end up with table salt. that's way you can make nitric acid by adding potassium nitrate or sodium nitrate to sulfuric acid.