CHEM 1062 Chapter Notes - Chapter 19.1-3: Buffer Solution, Conjugate Acid, Titration Curve
Document Summary
Buffer lessens the impact of an external force. An acid base buffer is a solution that lessens the impact of ph from the addition of an acid or base. To withstand the additions of h3o+ or oh-, a buffer must have an acidic component to react with the added oh- and a basic component to react with the added h3o+ The components are a conjugate acid base pair (weak acid + conjugate base or weak base + conjugate acid) Common ion effect occurs when a given ion is added to an equilibrium mixture that already contains that ion & the position of the eq shifts away from forming it. Common ion a- suppresses the dissociation of ha which makes the solution less acidic. Buffers work because large amounts of the acidic (ha) and basic (a-) components consume small amounts of added oh- and h3o+ respectively. If ratio [ha]/[a-] goes up, [h3o+] goes up.
