Acetic Acid

CCA! Volume 5

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Acetic Acid

The conductivity of water, glacial acetic acid, and dilute acetic acid are compared.


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Voiceover
A conductivity apparatus is placed in a beaker of deionized water and no light is observed. Placed in glacial acetic acid, no conductance is observed. When water is added to the pure acetic acid, the bulb glows brightly demonstrating the importance of water for the ionization of acetic acid.

Discussion
A conductivity apparatus is placed in a beaker of deionized water and no light is observed. When the conductivity apparatus is placed in glacial acetic acid no conductance is observed showing that water and glacial acetic acid are poor conductors of electricity (unionized). However, when water is added to the pure acetic acid, the bulb glows brightly demonstrating the importance of water for the ionization of acetic acid.

CH₃CO₂H(l) + H₂O(l) 1 CH₃CO₂^-(aq) + H₃O⁺(aq)

Design, Text and Demonstrator:
	Gary Trammell	University of Illinois at Springfield, Springfield, IL 62794

Videographer/Editor:
	Steve Dykema	University of Illinois at Springfield, Springfield, IL 62794

Voice:
	Margaret Biddle	University of Wisconsin - Madison, Madison, WI 53706

Audio Production:
	Greg Minix	University of Wisconsin - Madison, College of Engineering, Madison, WI 53706
	Jerrold J. Jacobsen	University of Wisconsin - Madison, Madison, WI 53706