P3C.1 At 10K Cpm (Hg(s)) = 4.64 J K¯¹ mol¹. Between 10 K and the melting point of Hg(s), 234.3 K, heat capacity measurements indicate that the entropy increases by 57.74 J K ¹ mol ¹. The standard enthalpy of fusion of Hg(s) is 2322 Jmol-¹ at 234.3 K. Between the melting point and 298.0 K, heat capacity measurements indicate that the entropy increases by 6.85 J K¹ mol™¹. Determine the Third-Law standard molar entropy of Hg(1) at 298 K. P3C.2 The measurements described in Problem P3C.1 were extended to 343.9 K, the normal boiling point of Hg(1). Between the melting point and the boiling point, heat capacity measurements indicate that the entropy increases by 10.83 JK¯¹ mol¯¹. The standard enthalpy of vaporization of Hg(1) is 60.50 kJ mol¹ at 343.9 K. Determine the Third-Law standard molar entropy of Hg(g) at 343.9K (you will need some of the data from Problem P3C.1).

P3C.1 At 10K Cpm (Hg(s)) = 4.64 J K¯¹ mol¹. Between 10 K and the melting point of Hg(s), 234.3 K, heat capacity measurements indicate that the entropy increases by 57.74 J K ¹ mol ¹. The standard enthalpy of fusion of Hg(s) is 2322 Jmol-¹ at 234.3 K. Between the melting point and 298.0 K, heat capacity measurements indicate that the entropy increases by 6.85 J K¹ mol™¹. Determine the Third-Law standard molar entropy of Hg(1) at 298 K. P3C.2 The measurements described in Problem P3C.1 were extended to 343.9 K, the normal boiling point of Hg(1). Between the melting point and the boiling point, heat capacity measurements indicate that the entropy increases by 10.83 JK¯¹ mol¯¹. The standard enthalpy of vaporization of Hg(1) is 60.50 kJ mol¹ at 343.9 K. Determine the Third-Law standard molar entropy of Hg(g) at 343.9K (you will need some of the data from Problem P3C.1).

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter6: Thermochemistry

Section: Chapter Questions

Problem 68E: In a coffee-cup calorimeter, 1.60 g NH4NO3 is mixed with 75.0 g water at an initial temperature of...

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