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Homework Help: Acid & Base titration curve

  1. Feb 27, 2010 #1
    http://img19.imageshack.us/img19/2692/chptitration.jpg [Broken]

    http://img130.imageshack.us/img130/6351/titrationfigure1.jpg [Broken]

    1.)For the titration of strong acid and strong base, and at the beginning of the curve, how to explain the big amount of base added only increase a little of the pH value since it was not a buffer region.

    2.)The line of point S or equivalence point is a straight line or steep/slope to left hand side ??

    thanks~~
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
     
    Last edited by a moderator: May 4, 2017
  2. jcsd
  3. Mar 5, 2010 #2
    The equivalence point occurs ideally when at an inflection point. That is when slope reaches a extremum (want [tex]\frac{d^2(pH)}{dV^2} = 0[/tex]) - however I have found that rarely happens in real life - you want the point closest to where this is true.

    I am still thinking about the first part.
     
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