CHEM 1A Lecture Notes - Lecture 18: Titration Curve, Equivalence Point, Buffer Solution
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Bufer soluions contain large and independently controlled concentraions of both a weak acid and its conjugate base. In bufer soluions, the hydrogen ion concentraion is equal in magnitude to the equilibrium constant scaled by the raio of the concentraions of the weak acid and its conjugate base. Bufers are ubiquitous in biological systems where they. ) and a soluion of pyridine (kb=1. 5 x 10. The ph at the equivalence point is higher with a smaller ka because the smaller the. This allows the weak acid to form non- dissociated acid, meaning more base is needed: at the half-equivalence point of the itraion curve, ph = pka of the weak acid being itrated. Yes, it can be proven by measuring the ph with a ph meter. At this half-equivalence point, equal amounts of an acid and its conjugate base are present.
