Hello, could you please solve this problem in the book. Here is a link to the pr

Question

Hello, could you please solve this problem in the book. Here is a link to the problem https://www.chegg.com/homework-help/Physical-Chemistry-5th-edition-chapter-4-problem-7P-solution-9780136056065

Oxides of sulfur are important in atmospheric pollution, arising particularly from burning coal. Use thethermodynamic data at 25 C given in the appendix to answer the following questions a. In air, the oxidation of SO2 can occur TO20g) SO20g)-So30g). Calculate AG2os. b. Findthe equilibrium ratio of partial pressures of SO3(g) to S02(g) in air at 25°C, the partial pressure of 02(g) is 0.21 bar. c. SO3(g) can react with H20 (g) to form sulfuric acid, H2S04(g). Air that is in equilibrium with liquid water at 25 °C has a partial pressure of H20(g) of 0.031 bar. Find the equilibrium ratio of partial pressures of H2S04(g) to SO3(g) in ak at 25°C. (see Appendix A.5)

Explanation / Answer

Delta H0 = Delta Hf (So3) - Delta Hf (So2) – (1/2) Hf (O2)

=-395.7 +296.8

Delta H0 = -98.9 kj/mol

Delta S0= S(SO3) - S(SO2) - (1/2) S(O2)

=256.8-248.2- (1/2) (205.1)

Delta S0=-93.95 J/mol.k

Delta G =delta H0 –T delta S0

= -98.9 kj/mol –(298 k) (-0.09395 kj/mol k)

=-70.9 kj/mol-----------------answer

=======================================================

K=e^delta G /RT

K=e^ (70.9 kj/mol)/ (0.08214 *298K)

K=2.68 X10^12

K=[SO3] /[O2]^1/2 [SO2]

[SO3] / [SO2]    =K[O2]^1/2

= 2.68 X10^12 (0.21)^1/2

= 1.23 X10^12

============================================================================================================================================

Delta H0 = Delta Hf (H2So4) - Delta Hf (H2O) – delta Hf (SO3)

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