This clip is part of the sequence Reaction rate surface area

Credit: RHYS LEWIS, AHS, DECD, UNISA/JON BAUGH/SCIENCE PHOTO LIBRARY

Caption: Animation of small chunks of calcium carbonate being attacked by hydrochloric acid. This is part of a demonstration showing the effect of the surface area of the reactants on the rate of a chemical reaction. The surface of the chunks are exposed to the acid, which reacts to produce carbon dioxide gas, which bubbles off (top), and also water, and calcium and chloride ions. As the ions enter the solution, more of the fresh calcium carbonate is exposed to the acid, so the chunk is eaten away. As the surface has to be eroded before more acid can attack the deeper layers, the surface area to volume ratio of the calcium carbonate determines how quickly the reaction proceeds. The same reaction with one large chunk is seen in K005/0341.

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

Keywords: acid, animated, animation, calcium carbonate, carbon dioxide, chalk, chemical, chemistry, chunk, chunks, co2, demonstrating, demonstration, education, educational, experiment, experimenting, gas, hydrochloric acid, inorganic, lesson, limestone, lump, mass, measurement, measuring, piece, pieces, procedure, rate, rates, reacting, reaction, school, science, set-up, small, solution, surface area, task, white background

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Acid attacking small chunks of mineral

K005/0344 Rights Managed

Downloadable master

Duration: 00:00:10.01

Frame size: 1920x1080

Frame rate: 25

Audio: No

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

File size: 237.9M

Original

Capture format: QuickTime Animation

Codec: Animation

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