Ph indicator. a dye that is an acid and that appears as different colors in its protonated and deprotonated forms can be used as a ph indicator. suppose that you have a 0.001 m solution of a dye with a p ka of 7.2. from the color, the concentration of the protonated form is found to be 0.0002 m. assume that the remainder of the dye is in the deprotonated form. what is the ph of the solution? berg, jeremy m.. biochemistry (p. 24). w. h. freeman. kindle edition.
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