CEM142 1nd Edition Lecture 10Outline of Last Lecture I. Bronsted-Lawry acids and basesOutline of Current Lecture II. TitrationsCurrent Lecture-note: the content of this lecture will NOT be on exam 1-exam 1 is on Thursday February 13-there is no lecture on Thursday-2 types of titrations-strong vs strong-strong vs weak-titration: neutralization reaction-H3O+ + OH- 2H2O-titrant: solution of known concentration-analyte: solution of unknown concentration-strong vs strong-the equilibrium point is always 7-pH is increased for 2 reasons-neutralizationThese notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.-dilution effect: volume is increasing so the concentration of H3O+ is decreasing and therefore the pH is increasing-strong vs weak-the equilibrium point is always above 7-Henderson HasselBack equation-pH = pKa + -log([conjugate base]/[acid])-buffer effect: equal amounts of conjugate base and
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