1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

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.
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook