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Electrical conductivity, 4 of 4

Electrical conductivity, 4 of 4

C044/0449

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48.9 MB (4.0 MB compressed)

3374 x 5068 pixels

28.4 x 42.9 cm ⏐ 11.2 x 16.9 in (300dpi)

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Credit

TURTLE ROCK SCIENTIFIC / SCIENCE SOURCE / SCIENCE PHOTO LIBRARY TURTLE ROCK SCIENTIFIC / SCIENCE SOURCE / SCIENCE PHOTO LIBRARY

Caption

Electrical conductivity, 4 of 4. A solution conducts electric current when it contains charged particles (ions). A circuit consisting of a battery, two electrodes (copper and graphite) in a jar, and a light bulb is used to test electrical conductivity of different solutions. When the jar is filled with 0.1 M acetic acid (CH3COOH), the bulb lights up but less brightly than with hydrochloric acid. Acetic acid is a weak organic acid and a weak electrolyte, it only partially dissociates into H+ and CH3COO- ions. Therefore, for the same molar concentration, acetic acid produces a lower concentration of ions needed to carry electric charges in the solution.

Release details

Model release not required. Property release not required.

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