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Two water molecules produce a hydronium ion and a hydroxide ion by transfer of a proton
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Self-ionization of water
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The pouvoir hydrogene; defined as the negative of the common logarithm of the hydronium ion concentration
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PH
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Defined as the negative of the common logarithm of the hydroxide ion concentration
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POH
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Compounds whose colors are sensitive to pH
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Acid-base indicators
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The pH range over which an indicator changes color
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Transition interval
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Determines the pH of a solution by measuring the voltage between the two electrodes that are placed in the solution
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PH meter
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The controlled addition and measurement of the amount of a solution of known concentration required to react completely with a measured amount of a solution of unknown concentration
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Titration
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The point at which the two solutions used in a titration are present in chemically equivalent amounts
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Equivalence point
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The point in a titration at which an indicator changes color
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End point
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The solution that contains the precisely known concentration of a solute
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Standard solution
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A highly purified solid compound used to check the concentration of the known solution in a titration
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Primary standard
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