Problem: Find ΔS°rxn for the combustion of methane to carbon dioxide and liquid water. Is the sign of ΔS°rxn as expected?

🤓 Based on our data, we think this question is relevant for Professor Telesford's class at TTU.

FREE Expert Solution

We are asked to calculate ΔS°rxn for the combustion of methane to carbon dioxide and liquid water. 


CH4 + 2 O2 → CO2(g) + 2 H2O(g)


 We can use the following equation to solve for ΔS˚rxn:


ΔS°rxn=S°f, prod-S°f, react



Gather from standard tables: 

CH4 = 186.27 J/mol • K

O2 = 205.03 J/mol • K

CO2 = 213.67 J/mol • K

H2O = 188.71 J/mol • K


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Problem Details

Find ΔS°rxn for the combustion of methane to carbon dioxide and liquid water. Is the sign of ΔS°rxn as expected?

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Our tutors have indicated that to solve this problem you will need to apply the Gibbs Free Energy concept. You can view video lessons to learn Gibbs Free Energy. Or if you need more Gibbs Free Energy practice, you can also practice Gibbs Free Energy practice problems.

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Based on our data, we think this problem is relevant for Professor Telesford's class at TTU.

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Our data indicates that this problem or a close variation was asked in Chemistry: The Molecular Nature of Matter and Change - Silberberg 8th Edition. You can also practice Chemistry: The Molecular Nature of Matter and Change - Silberberg 8th Edition practice problems.