In some cases the focus of the acid is an element for it to get strongly oxidizing. All over again, copper has no response with dilute sulfuric acid, but in concentrated sulfuric acid, the remarkably acidic environment and high focus of sulfate ions enable the sulfate ions to act https://marcoobluc.digiblogbox.com/53234596/detailed-notes-on-caluanie-muelear-oxidize-wikipedia