Chooseaweakacidwithpkanearbufferphrange

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Unformatted text preview: ontaining the conjugate base of polyprotic acids. page 2 of 3 Chapter 17: Acids and Bases (Continued) Acid‐Base Indicators – Know when color changes become apparent (at pKa1). – Know effective range of indicators using pKa. – Given the pKa for different acid‐base indicators, explain which indicators would be effective for specific acid‐base titrations. buffer: a solution of a weak acid or weak base and its conjugate that can resist large changes in pH upon addition of a small amount of strong acid or strong base. Determining pH and [H+] for any buffered solution – Know pH=pKa for [HA]=[A–] (at halfway to the equivalence point for a titration) – Calculate the number of moles of strong acid (H+) or strong base (OH–) added to the buffer. – Carry out the neutralization reaction, and determine the number of moles o...
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