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acid_base_titration_curve

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acid_base_titration_curve Powered By Docstoc
					                                   Typical
   General
                  Example         Titration           Features of Curve
    Type
                                    Curve


                                              Curve begins at high pH typical of
                                              strong base and ends at low pH
Strong Acid                                   typical of strong acid.
and Strong    HCl added to NaOH
Base                                          There is a large rapid change in pH
                                              near the equivalence point (pH
                                              =7).



                                              Curve begins at low pH typical of
                                              strong acid, and ends at high pH
Strong Base                                   typical of strong base.
and strong    NaOH added to HCl
Acid                                          There is a large rapid change in pH
                                              near the equivalence point
                                              (pH=7).




                                              Curve begins at a higher acidic pH
              NaOH added to                   and ends at high basic pH.
Weak Acid and
              acetic acid
Strong Base
              (CH3COOH)                       The pH change at the equivalence
                                              point (pH > 7)is not so great.




                                              Curve begins at low pH and ends
                                              at a less high basic pH.
Strong Acid
              Ammonia (NH3)
and Weak
              added to HCl                    The pH change at the equivalence
Base
                                              point (pH < 7) is similar to that for
                                              Strong Base and Weak Acid.
                                                      Curve begins at higher acidic pH
                                                      and ends at low basic pH.
              Ammonia (NH3)
Weak Acid and
              added to Acetic acid                    There is not a great pH change at
Weak Base
              (CH3COOH)                               the equivalence point (pH ~ 7)
                                                      making this a very difficult titration
                                                      to perform.




   Calculating a Titration Curve

   Imagine an experiment in which 0.10M HCl is added 1mL at a time to a conica

				
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posted:11/29/2011
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