What are the molar concentrations of acetic acid (CH,COOH) and sodium acetate (CH,COONA) in an aqueous solution buffered at a pH of 4.04 that has a freezing point of -3.45 °C? Assume complete dissociation of sodium acetate and a density of 1.02 g/mL for the solution. The pKa for CH,COOH is 4.75. [CH;COOH] M [CH;COONA] = M %3D

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