acidsbasespH

acidsbasespH - Acids, Bases, pH Introduction H2O + H2O H 3O...

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1 Acids, Bases, pH Introduction a H 2 O + H 2 O H 3 O + + OH - a by convection we write: H 2 O H + +O H - a pH = 7, neutral at equilibrium, [H + ] = [OH - ] 2 pH a Scale = 0-14 a acid: dissociates H + , pH below 7 ex. HCl H + + Cl - a base: dissociates OH - accepts H + , pH above 7 ex. NaOH Na + + OH - ex. NH 3 + H + NH 4 + 3 Using Indicators to Measure pH a Anthocyanins = plant pigments used as pH indicator (cabbage) ` red at low pH a Procedure: ` make standards with the following pH buffers and record their color: 2, 4, 6, 7, 8, 10, 12.
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4 The pH Meter a The pH meter is more accurate than indicators. a Procedure:
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This note was uploaded on 01/06/2012 for the course BIOL 1406 taught by Professor Markgarcia during the Fall '11 term at Collins.

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acidsbasespH - Acids, Bases, pH Introduction H2O + H2O H 3O...

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