Credit: RHYS LEWIS, AHS, DECD, UNISA/EQUINOX GRAPHICS/SCIENCE PHOTO LIBRARY

Caption: Animation of an experiment showing the electrolysis of water into its constituent parts, hydrogen and oxygen. The apparatus comprises two platinum electrodes either side of a reservoir of water. Electricity is passed through the circuit. In the first inset, at the negatively charged cathode, electrons (blue) are donated to water molecules, splitting them into hydroxide ions (OH-) and hydrogen gas. The second inset shows water at the positive anode, which accepts electrons from the water, splitting the molecules and forming oxygen gas. Twice as much hydrogen as oxygen is produced, as there are twice as many hydrogen atoms in a water molecule (H2O). The gases are both tested in boiling tubes filled by opening taps at the vessels' tops. When a lit splint is placed in hydrogen gas, it explodes with a characteristic squeaky pop. When a glowing splint is placed in oxygen, it relights.

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

Keywords: animated, animation, anode, apparatus, atom, atoms, boiling tube, bubble, bubbles, bubbling, burning, cathode, circuit, current, demonstration, education, educational, electric, electricity, electrode, electrodes, electrolysis, electrons, equipment, experiment, gas, gases, gasses, glassware, glowing, hydrogen, ion, ions, lit, molecular, molecule, molecules, oxidation, oxygen, platinum, power, reduction, relight, relighting, science, scientific, splint, splitting, squeaky pop, test, test tube, testing, voltage, water, wood

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Electrolysis of water and gas testing

K005/4435 Rights Managed

Downloadable master

Duration: 00:00:50.01

Frame size: 1920x1080

Frame rate: 25

Audio: No

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

File size: 1.3G

Original

Capture format: QuickTime Animation

Codec: PNG

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

 

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