Problem: Consider the following reaction occurring at 298 K: BaCO3(s) ⇌ BaO(s) + CO2(g)What temperature is required to produce a carbon dioxide partial pressure of 1.0 atm?

FREE Expert Solution

Step 1: We need to determine the ΔH˚rxn:


ΔH°rxn=Hf°products-Hf°reactants


ΔH°rxn=[1 mol×-548.0 kJmol+1 mol×-393.5 kJmol]-[1 mol×-1213.0 kJ1 mol]                   (103 J1 kJ)

ΔH˚rxn = 271,500 J



Step 2: We need to determine the ΔS˚rxn:

ΔS°rxn=[1 mol×72.1 JK·mol+1 mol×213.8 JK·mol]-[1 mol×112.1 JK·mol]

ΔS˚rxn = 173.8 J/K


Step 3: We need to determine the ΔG˚rxn:


ΔG°rxn=-(8.314 Jmol·K)(298 K)ln(1.00 atm)


ΔG˚rxn = 0 J


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Problem Details

Consider the following reaction occurring at 298 K: BaCO3(s) ⇌ BaO(s) + CO2(g)

What temperature is required to produce a carbon dioxide partial pressure of 1.0 atm?

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