Credit: SCIENCE PHOTO LIBRARY MOTION

Caption: Endpoint in titration experiment. Close-up footage of a demonstration of the end point 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) has been added from a burette (not seen). When the mixture in the flask approaches its end point (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, even after swirling, as seen here.

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

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Endpoint in titration experiment

K005/3787 Rights Managed

Downloadable master

Duration: 00:00:12.09

Frame size: 1920x1080

Frame rate: 25

Audio: No

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

File size: 109.7M

Original

Capture format: Canon EOS 5D Mark III

Codec: H.264

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

 

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