The following data are from a laboratory experiment that examines the relationship between solubility and thermodynamics. In

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The following data are from a laboratory experiment that examines the relationship between solubility and thermodynamics. In this experiment KNO3(s) is placed in a test tube containing some water. The solution is heated until all the KNO3(s) is dissolved and then allowed to cool. The temperature at which crystals appear is then measured. From this experiment we can determine the equilibrium constant, Gibbs energy, enthalpy, and entropy for the reaction. Use the following data to calculate ΔrG, ΔrH, and ΔrS for the dissolution of KNO3(s). (Assume the initial mass of KNO3(s) was 20.2 g.)

Total Volume, mL 25.0 29.2 33.4 37.6 41.8 46.0 51.0 Temperature Crystals Formed, K 340 329 320 313 310 306 303

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General Chemistry Principles And Modern Applications

ISBN: 9780132931281

11th Edition

Authors: Ralph Petrucci, Jeffry Madura, F. Herring, Carey Bissonnette

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