Credit: RHYS LEWIS & MINH TAN PHAM, AHS, DECD, UNISA/SCIENCE PHOTO LIBRARY

Caption: Ring de-plated in aqua regia. Timelapse footage of a metal-plated ring being de-plated in aqua regia, a mixture of concentrated acids. Concentrated hydrochloric acid (HCl) is added first, followed by a smaller amount of concentrated nitric acid (HNO3). The mixture produces yellow fumes and bubbles as the acids react to form nitrosyl chloride (NOCl) and chlorine gas (Cl2). This mixture of acids can dissolve gold and platinum. The blackened ring at the end of the clip indicates that the gold or platinum plating has been removed by the aqua regia.

Release details: Model release not required. Property release not required.

Keywords: acids, aqua regia, boiling, bubbling, chemical, chemist, chemistry, chlorine, cl2, clip, concentrated acid, de-plated, de-plating, demonstration, demonstrator, dissolved, dissolving, education, educational, exothermic, experiment, film, footage, fume, fumes, fuming, gas, gold, hcl, hno3, human, hydrochloric acid, lab, laboratory, metal, metals, mixing, mixture, motion, nitric acid, nitrosyl chloride, nocl, one person, people, person, plated, platinum, precious metals, reactants, reacting, reaction, removed, removing, school science, scientist, sped up, speeded up, studio shot, time-lapse, timelapse, video, yellow

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Ring de-plated in aqua regia

K004/4762 Rights Managed

Downloadable master

Duration: 00:00:24.09

Frame size: 1920x1080

Frame rate: 25

Audio: No

Format: QuickTime, Photo JPEG 100%, progressive scan, square pixels

File size: 813.6M

Original

Capture format: Sony FS700

Codec: H.264

Interlaced: Yes

Please contact Science Photo Library if you require the original, or other formats.

 

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