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SCAN0017 - So szpKa log[proton what[prot0n what i For a...

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Unformatted text preview: So... - szpKa + log [proton what?]/[prot0n what? i For a weak acid pH is dependent on two things Dissociation Concentration cnscoo- [CHzCGDH] = [CH3COO“] “at“ pH 5.76 , Buffering region a 00.1 0.3 05 0.? {L913 DH' added (equivalents) L~.___.1..._.....—.J 0 50 Percentage titrated awn,“ [WW 4 www.mvzm « mm "(vzmmaruxim/wfi; 5 0.1 mm NaTCH3c00‘ Gradual pH change 10 20 30 40 50 60 Base added (drops) mm" mama“ immmrwmiun a 7mm} 1 MM. and Comm“! Buffers What is a buffer? Why are buffers important to living organisms? How do buffers work? Review of Buffers: i Buffering j regions: fining; [/7405 5" Hm,“ NH, ins ’ f 7.86 ,1 Phospham ”List; Menus i 3.76 / cuxcoo" /iC:-13CDOH‘; s iCH3C00'l m1: = 4.75 (mcoun 00.1 as us 0.7 0.9m OH’ added (equivallntsl Percentage titrated “gnu : n nmmu (M61. as. Zillim r. mummy.“ mama", Regulation of pH in the blood ,., , , -2- Blood plasma of mammals has a constant W ' pH regulated by a buffer system of: carbon dioxide /carbonic acid [bicarbonate 4‘ Bufiercapacity depends upon equilibria: 1. Gaseous CO2 (air spaces ofthe lungs) 2. Aqueous CO2 (dissolved in the blood) 37 Carbonic acid (liquid) 4. Bicarbonate (liquid) chOj (—r HQ) + Hm? LU; Coziaquuuus) 4 l-i_.0 L‘? urn; gaseous) C02 lgzisuuus) Z CUZ(1|QUCD||SY ...
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