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

Caption: Belousov-Zhabotinsky (BZ) reaction. High-speed footage demonstrating a Belousov-Zhabotinsky (BZ) reaction, in which bromate ions oxidise malonic acid to carbon dioxide. A solution containing bromate ions and malonic acid is mixed in a beaker using a magnetic spinner, with cerium (IV) ions as a catalyst. The reaction mixture oscillates in colour between red-brown and colourless with a time period of about 20 seconds, in two auto-catalytic processes. Bromate ions (colourless) are reduced to molecular bromine (red-brown), and then to bromide ions (colourless) in the presence of cerium ions, and malonic acid is oxidised to carbon dioxide and water. This reaction is an example of a class of reactions called Belousov-Zhabotinsky (BZ) reactions and is an example of non-equilibrium thermodynamics, and a non-linear chemical oscillator. For the reaction at normal speed, see clip K004/5017.

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

Keywords: agent, auto-catalytic, beaker, belousov-zhabotinsky, bromate, bromide, bromine, brown, bz, carbon dioxide, catalysing, catalysis, catalyst, cerium, cerium iv, change, changing, chemical, chemistry, clip, colour, colourless, demonstrating, demonstration, education, educational, effect, effects, experiment, experimental, film, footage, high speed, high-speed, ion, lab, laboratory, magnetic, magnetic stirrer, malonic acid, manganese, mixed, mixing, mixture, motion, no-one, nobody, non-equilibrium thermodynamics, non-linear chemical oscillator, oscillate, oscillation, oscillator, oxidation, oxidising, oxidizing, reacting, reaction, red, school science, science, slo-mo, slow motion, solution, spinner, studio shot, video

Licence fees: A licence fee will be charged for any media (low or high resolution) used in your project.

Belousov-Zhabotinsky reaction

K004/5018 Rights Managed

Downloadable master

Duration: 00:01:02.14

Frame size: 1920x1080

Frame rate: 25

Audio: No

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

File size: 952.4M

Original

Capture format: Sony FS700

Codec: Apple ProRes 422 HQ

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

 

Save watermarked comp

Request un-watermarked file

Price clip Pricing

Please login to use the price calculator