The standard free energies of formation and the standard

Chapter 17, Problem 66

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The standard free energies of formation and the standard enthalpies of formation at 298 K for difluoroacetylene (C2F2) and hexafluorobenzene (C6F6) are 2NO21g2 N2O41g2 2H2S1g2 SO21g2 3S1s2 2H2O1g2 Gf (kJ/mol) Hf (kJ/mol) C2F2(g) 191.2 241.3 C6F6(g) 78.2 132.8 For the following reaction: a. calculate S at 298 K. b. calculate K at 298 K. c. estimate K at 3000. K, assuming H and S do not depend on temperature. 67.

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