The absorbance of a solution of a weak acid was measured under the same conditions at a
Chapter 14, Problem 42(choose chapter or problem)
The absorbance of a solution of a weak acid was measured under the same conditions at a series of pH values. Its conjugate base is the only species in the solution that absorbs UV light at the wavelength used. Estimate the p Ka of the acid from the data obtained. pH 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0 Absorbance 0 0 0.10 0.50 0.80 1.10 1.50 1.60 1.60 1.60
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