PIRA 5E40.60 - Cells and Batteries:
Simple battery
Photo Shows the Apparatus Used at the University of Texas at Austin
Instructions / Notes:
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Copper (+) and zinc (-) plates are suspended in a solution containing H2S04 to
form a simple battery.
- Only 125 ml of diluted sulfuric acid in an Erenmeyer flask is provided to limit spills.
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Prior to performing the demo, keep the acid solution in the stoppered flask until.
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The sulfuric acid solution used by the Demo Office is a 5% solution, hence the voltaic cell produces less than 1 volt.
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DEMO STAFF: Cu and Zn plates must be sanded clean before each demonstration.
- In addition to the Voltaic cell, the 125 ml flask of diluted sulfuric acid should rest on top of some folded paper towels to limit any spills.
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The voltmeter needs to rest on top of an overhead projector for class viewing. (Use a cut out poster board to block unwanted light.)
- This demo uses the voltmeter's 3 volt terminal. - The other end of the black wire goes to the zinc terminal.
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Safety Note: When making an acid solution, #1 wear eye protection and #2 add H2SO4 into the water slowly.
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Safety Note: Adding water into concentrated H2SO4 will cause the acid to explode.
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Safety Note: The acid solution can cause chemical burns and eat holes through clothing.
Last Updated 10/16 - University of Texas at Austin Physics Dept.
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