how does an universal indicator work ?

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Offline lomm

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how does an universal indicator work ?
« on: 18/04/2010 21:21:14 »
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« Last Edit: 18/04/2010 21:32:58 by lomm »

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Offline Geezer

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how does an universal indicator work ?
« Reply #1 on: 19/04/2010 10:31:21 »
I'm not sure I know (actually I'm pretty sure I don't know), but I seem to remember mucking about with phenolphthalein or something.
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Offline Bored chemist

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how does an universal indicator work ?
« Reply #2 on: 19/04/2010 18:08:51 »
They mix a bunch of indicators that change colour at different pH values.
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