Sapling Learning The K, values for several weak acids are given below. Which acid (and its conjugate base) would be the best buffer at pH 8.0? O O O Tris; Ka-6.3x 10 HEPES Ka = 3.2 × 108 Formic acid: Ka = 1.8x 104 MES; Ka = 7.9 × 10.7 O Acetic acid: Ka 1.8 x105 Abbreviations: MES: 4-Morpholineethanesulfonic acid HEPES: 4-(2-Hydroxyethyl)piperazine-1-ethanesulfonic acid Tris; 2-Amino-2-hydroxymethyl-propane-1,3 -diol
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Answer
From this result it is clear that.