Question

I was previously told that this could not be solved becuase the enthalpy of formation of Barium Carbonate was not known.  I do not believe this is necessary tho, because the question is provides the delta H for each reaction.  I believe Hess's law is all you need to solve this.  I am still a little rusty on it tho, so i would appreciate some help. 

thank you so much! :)

4) What is AH for BaCO3 (s)- BaO (s)+ CO2 (g)
Given reactions
AH= -1106.0 kJ
2 Ba (s)+ 02 (g)
Ba (s)+ CO2 (g)+ 1/2 O2 (g)
2 BaO (s)
AH= -822.0 kJ
BaCO3 (g)
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Transcribed Image Text

4) What is AH for BaCO3 (s)- BaO (s)+ CO2 (g) Given reactions AH= -1106.0 kJ 2 Ba (s)+ 02 (g) Ba (s)+ CO2 (g)+ 1/2 O2 (g) 2 BaO (s) AH= -822.0 kJ BaCO3 (g)

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