┐Should the temperature rise in a working Galvanic cell?

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Offline Garabato

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I recently had a lab when we were making voltaic cells ( http://en.wikipedia.org/wiki/Galvanic_cell ); I was supoused to measure the temperature before and after I conected the two beakers, but there was no change at all.

My question is: ┐Is there any theoretical change? (maybe a very small change)

Thank you

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another_someone

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┐Should the temperature rise in a working Galvanic cell?
« Reply #1 on: 05/08/2007 21:13:08 »
If you are passing a current around the circuit, you would always expect a rise in temperature to go with that current (exactly how much will depend on a number of factors - not least the current you are generating, but some battery types, if they are short circuited, can generate so much current that they can get extremely hot indeed, and cause damage to themselves).

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Offline Garabato

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┐Should the temperature rise in a working Galvanic cell?
« Reply #2 on: 06/08/2007 16:55:32 »
Thank you very much; I generated like a 1.067 v ┐Is it normal that there was no observable change in the thermometer? (the thermometer measures 1 degree change as minimum)