Credit: RHYS LEWIS & MINH TAN PHAM, AHS, DECD, UNISA/SCIENCE PHOTO LIBRARY

Caption: Demonstration of the change in conductivity of a solution when a weak acid is added. In the solution are two wires, connected to a circuit containing a battery and a light bulb. If a current flows, the light bulb will light up. In this case it does not. Weak acids are those that do not dissociate much in solution, producing relatively few free ions. A current is the movement of charged ions, and the lack of ions here is seen in the lack of current flowing. For the same experiment with a strong acid, see clip K004 3150.

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Keywords: acidic, adding, bench, bulb, chemical, chemistry, circuit, conduction, conductivity, demonstrating, demonstration, education, educational, electricity, experiment, glassware, ionised, lab, laboratory, light off, non-conductive, pipette, reacting, reaction, school, science, test, testing, unlit, weak acid, weakly

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Conductivity with weak acid

K004/3149 Rights Managed

Downloadable master

Duration: 00:00:07

Frame size: 1920x1080

Frame rate: 25

Audio: No

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

File size: 187.4M

Original

Capture format: Sony FS700

Codec: Apple ProRes 422 (HQ)

Interlaced: Yes

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