A certain carboxylic acid has a Ka of 5.1 x 10^-7. What is the ratio of the ratio of the deprotonated to the protonated form, respectively, at physiological pH of about 7.4? Assume the following general reaction. HA(aq) + H2O(l) ? H3O+(aq) + A-(aq)

A) 13 : 1
B) 1 :13
C) 100 : 1
D) 1 : 100


A

Environmental & Atmospheric Sciences

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