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An acid-base indicator, HIn, dissociates according to the following reaction in an aqueous solution. K, The protonated form of the indicator, Hin, has a molar absorptivity of 2575 M1 cm 1and the deprotonated form, In, has a molar absorptivity of 17640 M1 cm at 440 nm. The pH of a solution containing a mixture of Hln and In is adjusted to 6.03. The total concentration of Hln and In is 0.000181 M. The absorbance of this solution was measured at 440 nm in a 1.00 cm cuvette and was determined to be 0.883. Calculate pKa for Hln. Number

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