Electrical conductivity, 4 of 4

Numéro d’image : 12652664
Electrical conductivity, 4 of 4
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.
Licence : Droits gérés
Crédit: Science Photo Library / Science Source / Turtle Rock Scientific
Taille de l’image : 3374 px × 5068 px
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