Short Answer
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.
Correct Answer:

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Correct Answer:
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