Credit: SCIENCE PHOTO LIBRARY MOTION

Caption: Acid-base titration experiment. Footage of a demonstration of an acid-base titration using the indicator phenolphthalein. A solution of hydrochloric acid is in the flask, with a few drops of the indicator added. Sodium hydroxide solution (a base) is slowly added from the burette and the flask swirled to mix the chemicals. As the mixture in the flask approaches its endpoint (when the acid and base are exactly neutralised) adding further amounts of base turns the solution alkaline. This causes the indicator to show as purple.

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

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Acid-base titration experiment

K005/3858 Rights Managed

Downloadable master

Duration: 00:01:04.21

Frame size: 1920x1080

Frame rate: 25

Audio: No

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

File size: 663.4M

Original

Capture format: Canon EOS 5D Mark III

Codec: H.264

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