The standard entropy of Pb(s) at 298.15 K is 64.80 J KL mol. Assume that the heat capacity of Pb(s) is given by: Cpm(s) Jmol-¹K- = 22.13 +0.011727(K-¹) +1.00 × 10-572(K-2) The melting point is 327.4°C, and the heat of fusion under these conditions is 4770 J mol¹. Assume that the heat capacity of Pb(/) is given by Cpm(1) Jmol-1K-1 = 32.51 -0.00301 7(K-¹) a) Calculate the standard entropy of Pb(l) at 850°C b) Calculate AH for the transformation of Pb(s,25°C) → Pb(/, 850°C)

The standard entropy of Pb(s) at 298.15 K is 64.80 J KL mol. Assume that the heat capacity of Pb(s) is given by: Cpm(s) Jmol-¹K- = 22.13 +0.011727(K-¹) +1.00 × 10-572(K-2) The melting point is 327.4°C, and the heat of fusion under these conditions is 4770 J mol¹. Assume that the heat capacity of Pb(/) is given by Cpm(1) Jmol-1K-1 = 32.51 -0.00301 7(K-¹) a) Calculate the standard entropy of Pb(l) at 850°C b) Calculate AH for the transformation of Pb(s,25°C) → Pb(/, 850°C)

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

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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