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Conductivity of Solutions

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Published on Nov 18, 2011

We look at the electrical conductivity of several solutions. Substances include tap water, distilled water, sodium chloride, hydrochloric acid, sodium hydroxide, sugar, vinegar, ethanol, and barium sulfate. The solutions are mixed to approximately the same ratios. The tester is a pair of stripped copper wires at line voltage in series with a 25W incandescent bulb. The probe is rinsed in distilled water between each test.

For more details on our setup, see:
http://sciencedemonstrations.fas.harv...
and also
http://sciencedemonstrations.fas.harv...

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