Thermodynamic Quantities for Selected Substances at 298.15 K (25 °C) Substance AH°f (kJ/mol) AG°f (kJ/mol) S(K-mol) Calcum Ca (s) CaCl2 (s) 41.4 -795.8 -748.1 104.6 Caz* (aq) 226.7 209.2 200.8 Chlorine Cl2 (8) 222.96 Cl- (aq) -167.2 -131.2 56.5 Oxygen 02 (8) 205.0 H20 (1) -285.83 -237.13 69.91 Phosphorus P2 (g) PC13 (g) POC13 (g) 144.3 103.7 218.1 -288.1 -269.6 311.7 -542.2 -502.5 325 Sulfur 31.88 S (s, rhombic) -269.9 -300.4 248.5 90 3(g) -395.2 -370.4 256.2 The value of A G° at 25 °C for the decomposition of phosphorous trichloride into its constituent elements as shown. 2PCI3(g) --> P2(g) + 3CI2(g) is kJ/mol. A. -539.2 B. +539.2 C. -642.9 D. +642.9 O E. -373.3

Thermodynamic Quantities for Selected Substances at 298.15 K (25 °C) Substance AH°f (kJ/mol) AG°f (kJ/mol) S(K-mol) Calcum Ca (s) CaCl2 (s) 41.4 -795.8 -748.1 104.6 Caz* (aq) 226.7 209.2 200.8 Chlorine Cl2 (8) 222.96 Cl- (aq) -167.2 -131.2 56.5 Oxygen 02 (8) 205.0 H20 (1) -285.83 -237.13 69.91 Phosphorus P2 (g) PC13 (g) POC13 (g) 144.3 103.7 218.1 -288.1 -269.6 311.7 -542.2 -502.5 325 Sulfur 31.88 S (s, rhombic) -269.9 -300.4 248.5 90 3(g) -395.2 -370.4 256.2 The value of A G° at 25 °C for the decomposition of phosphorous trichloride into its constituent elements as shown. 2PCI3(g) --> P2(g) + 3CI2(g) is kJ/mol. A. -539.2 B. +539.2 C. -642.9 D. +642.9 O E. -373.3

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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