CHEM 001 Lecture Notes - Lecture 8: Acid Dissociation Constant, Equivalence Point, Conjugate Acid

• School: College of The Sequoias
• Department: Chemistry (CHEM)
• Course: CHEM 001
• Professor: Rodriguez

Document Summary

C. half equivalence point: midpoint of the line that is most closely horizontal. Definition: midpoint of the line that is most closely horizontal. Description: the point where the largest amount of acid or base could be added with the smallest change in ph, i. e. a buffer. C. half equivalence point p h: solution ph = pka of acid, predicted by the henderson- hasselbalch equation. Titrations: henderson- hasselbalch how to find p h at half equivalence point. A. henderson- hasselbalch is simply a form of the equilibrium expression ka: Titrations: henderson- hasselbalch how to find p h at equivalence point. Cannot use h. h. to find the ph at the equivalence point. At equivalence point: [conjugate base] = (# moles acid/volume acid)+ (volume of base used to titrate) Unless the base has no volume, then the volume of the base: [conjugate base at equivalence point] will not be equal to [original acid] Titrations: henderson- hasselbalch: finding the p h at equivalence.