Given the following table of thermodynamic data, Determine the Delta S degree (i

Question

Given the following table of thermodynamic data, Determine the Delta S degree (in j/mol-K) for the reaction: S(s) + O_2(g) rightarrow SO_2(g) a. +11.6 b. -166.4 c. -154.7 d. +19.3 e. +189.6 The entropy of vaporization (Delta S degree_vap) for benzene is 96.4 J/K-mol. The enthalpy of vaporization (Delta H degree_vap) is 33.9 kJ/mol. What is the normal boiling (in degree C) for benzene? a. 2.8 degree C b. 0.35 degree C c. 100 degree C d. 79 degree C e. 0.0 degree C Hydration is a specific example of the phenomenon known generally as. a. Dissolution b. Disordering c. Salvation d. Condensation e. Dilution

Explanation / Answer

25. DSrxn = (s0so2) - (S0O2+ s0S)

= (248.5)-(205.0+31.88)

= +11.62

answer: a

26. DG0 = DH0-TDS0

   0 = 33.9*10^3-(X*96.4)

   X = 351.66 K

T = boilingpoint of benzene = 78.51 C

answer: d

27. a

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