Caption: Dry ice and pH meter. Footage of a pH probe and meter being used to measure the pH levels in a reaction involving dry ice (frozen carbon dioxide, CO2). At the start of the clip, dry ice is added to water (H2O). Most of the dry ice sublimates (turns from a solid into a gas) to form the characteristic 'fog' formed by dry ice as water vapour in the air condenses on the cold CO2. Some of the carbon dioxide dissolves in the water to form carbonic acid (H2CO3). The meter display shows the pH decreasing as the acid forms.

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

Keywords: acid, acidic, carbon dioxide, carbonic acid, chemical, chemist, chemistry, clip, co2, cold, condensed, condensing, demonstration, demonstrator, dry ice, dry ice smoke, education, educational, experiment, film, fog, footage, frozen, fumes, fuming, h2co3, h2o, human, lab, laboratory, metre, motion, one person, people, person, ph meter, probe, school science, scientist, studio shot, video, water, water vapour

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Dry ice and pH meter

K004/5656 Rights Managed

Downloadable master

Duration: 00:00:29

Frame size: 1920x1080

Frame rate: 25

Audio: No

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

File size: 800.6M


Capture format: Sony FS700

Codec: Apple ProRes 422 HQ

Interlaced: Yes

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


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