Decomposition problem, thermodynamics.?

For the decomposition of NaHCO3, estimate the temperature at which the total pressure of the gases above the solids is 1 atm.

2NaHCO3 (s) <--> Na2CO3(s) + H2O(g) + CO2(g)

Additional Details
5 hours ago
Answer is 393 K.

If possible, please show work.
35 minutes ago
We'd need enthalpies of formation and standard entropies for those substances. And are you sure it's the total pressure is 1 atm or the partial pressure of each gas?

The question is the exact wording of the book.

NaHCO3 (s)
dHf* = -950.8 kJ mol^-1
dGf* = -851 kJ mol^-1
S* = 102 J mol^-1 K^-1

Na2CO3 (s)
dHf* = -1131 kJ mol^-1
dGf* = -1044 kJ mol^-1
S* = 135.0 J^-1 mol^-1 K^-1

H20 (g)
dHf* = -241.8 kJ mol^-1
dGf* = -228.6 kJ mol^-1
S* = 188.7 J mol^-1 K^-1

CO2(g)
dHf* = -393.5 kJ mol^-1
dGf* = -394.4 kJ mol^-1
S* = 213.6 J mol^-1 K^-1

Answer:
Who needs that much ??? Just find out heat of the reaction and then use

del G = del H - T del S

The answers post by the user, for information only, FunQA.com does not guarantee the right.



More Questions and Answers:
  • How important is Technical Communication in your field of work?i need an answer in 5 minutes..?
  • I don't know how to construct this equation. Can you help me?
  • PlEASE I NEED URGENT HELP in answereing those questions?
  • Can you help me solve this chemistry problem?
  • What is the boiling & melting pt of .15 mol solute in 800 g H2O?
  • Atoms of 16O, 17O, and 18O have the same number of.?
  • Quantitative Inorganic Analysis Questions...?
  • Find the critical constants of HCL?
  • What are some ways to grow easy crystals with stuff in a common kitchen?