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The Freezing-Point Depression of a 3

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The freezing-point depression of a 3.00 *10-3 M solution of a weak acid HA is 6.67* 10-3 °C in water. Assuming that the molarity concentration and the molality concentration are the same and assuming ideal behavior, calculate Ka for the weak acid. Kf(H2O) = 1.86 °C kg/mol.

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1.4 * 10

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