![Engraving depicting nitric acid manufacturing using cast iron cylinders in a furnace. Sulphuric acid and chili nitre (sodium nitrate) are heated and nitric acid vapour passes to large Woulff's bottles containing water. Engraving depicting nitric acid manufacturing using cast iron cylinders in a furnace. Sulphuric acid and chili nitre (sodium nitrate) are heated and nitric acid vapour passes to large Woulff's bottles containing water.](https://c8.alamy.com/comp/MR6KYA/engraving-depicting-nitric-acid-manufacturing-using-cast-iron-cylinders-in-a-furnace-sulphuric-acid-and-chili-nitre-sodium-nitrate-are-heated-and-nitric-acid-vapour-passes-to-large-woulffs-bottles-containing-water-dated-19th-century-MR6KYA.jpg)
Engraving depicting nitric acid manufacturing using cast iron cylinders in a furnace. Sulphuric acid and chili nitre (sodium nitrate) are heated and nitric acid vapour passes to large Woulff's bottles containing water.
![The chemical process of dissolving metallic iron in nitric acid, in test tube, with the formation of a brown solution and nitrogen dioxide gas. Stock Photo | Adobe Stock The chemical process of dissolving metallic iron in nitric acid, in test tube, with the formation of a brown solution and nitrogen dioxide gas. Stock Photo | Adobe Stock](https://as1.ftcdn.net/v2/jpg/03/02/90/42/1000_F_302904221_ddBU6l4WOMXgyio45od4FFE7esDbUxiy.jpg)
The chemical process of dissolving metallic iron in nitric acid, in test tube, with the formation of a brown solution and nitrogen dioxide gas. Stock Photo | Adobe Stock
![Chemical lecture experiments . er, of only a few seconds du-The iron is then carefully with-immersed in water, and then inordinary concentrated nitric acid. Theiron is no longer acted upon by the Chemical lecture experiments . er, of only a few seconds du-The iron is then carefully with-immersed in water, and then inordinary concentrated nitric acid. Theiron is no longer acted upon by the](https://l450v.alamy.com/450v/2axgtah/chemical-lecture-experiments-er-of-only-a-few-seconds-du-the-iron-is-then-carefully-with-immersed-in-water-and-then-inordinary-concentrated-nitric-acid-theiron-is-no-longer-acted-upon-by-the-acidiron-in-the-passive-state-loses-its-prop-erty-of-depositing-copper-from-solutionsof-copper-salts-and-when-immersed-in-asaturated-solution-of-copper-nitrate-theiron-will-retain-its-original-grayish-colorthe-iron-should-be-carefully-withdrawnfrom-the-solution-of-copper-nitrate-and-then-sharply-struckon-one-edge-with-a-lead-pencil-or-glass-rod-the-passivityis-destroyed-by-the-blow-and-the-iro-2axgtah.jpg)
Chemical lecture experiments . er, of only a few seconds du-The iron is then carefully with-immersed in water, and then inordinary concentrated nitric acid. Theiron is no longer acted upon by the
![Characteristic Redox Potential-Time Curve in the Iron(II)/Nitric Acid Autocatalytic Reaction and Its Application to a Time Measurement-determination of Folic Acid | Semantic Scholar Characteristic Redox Potential-Time Curve in the Iron(II)/Nitric Acid Autocatalytic Reaction and Its Application to a Time Measurement-determination of Folic Acid | Semantic Scholar](https://d3i71xaburhd42.cloudfront.net/a67a0a856e607dc3f04f36f10f434ac25e54520e/2-Table1-1.png)
Characteristic Redox Potential-Time Curve in the Iron(II)/Nitric Acid Autocatalytic Reaction and Its Application to a Time Measurement-determination of Folic Acid | Semantic Scholar
![Processes | Free Full-Text | Effect of Nitric Acid Modification on Characteristics and Adsorption Properties of Lignite Processes | Free Full-Text | Effect of Nitric Acid Modification on Characteristics and Adsorption Properties of Lignite](https://www.mdpi.com/processes/processes-07-00167/article_deploy/html/images/processes-07-00167-g001.png)
Processes | Free Full-Text | Effect of Nitric Acid Modification on Characteristics and Adsorption Properties of Lignite
![Schematic Pourbaix diagram for iron illustrating the resolution of the... | Download Scientific Diagram Schematic Pourbaix diagram for iron illustrating the resolution of the... | Download Scientific Diagram](https://www.researchgate.net/publication/237545491/figure/fig2/AS:668935460511766@1536498050746/Schematic-Pourbaix-diagram-for-iron-illustrating-the-resolution-of-the-Faraday-paradox-in.png)