Could someone explain how to solve this GC problem?

[swindoll]

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I can't figure this out..

 

[DocVaquero]

I got you. Alright let's start with the Gibbs free energy equation. DeltaG= DeltaH -(T)DeltaS ... Delta H is the heat of formation times 2 since there are two moles! Temperature should be converted to Kelvin so 25 C is 298K. Then delta S is the Sum of Delta S of the mols of products minus sum of Delta S reactants. That gives you 25. Then the 1 x 10-3 is to convert J from the entropy to kJ from the enthalpy. It is hard to type out but I hope that helped!

 

[swindoll]

I got you. Alright let's start with the Gibbs free energy equation. DeltaG= DeltaH -(T)DeltaS ... Delta H is the heat of formation times 2 since there are two moles! Temperature should be converted to Kelvin so 25 C is 298K. Then delta S is the Sum of Delta S of the mols of products minus sum of Delta S reactants. That gives you 25. Then the 1 x 10-3 is to convert J from the entropy to kJ from the enthalpy. It is hard to type out but I hope that helped!

Got it! Thanks a lot!

 

[shyfox9p]

I got you. Alright let's start with the Gibbs free energy equation. DeltaG= DeltaH -(T)DeltaS ... Delta H is the heat of formation times 2 since there are two moles! Temperature should be converted to Kelvin so 25 C is 298K. Then delta S is the Sum of Delta S of the mols of products minus sum of Delta S reactants. That gives you 25. Then the 1 x 10-3 is to convert J from the entropy to kJ from the enthalpy. It is hard to type out but I hope that helped!

Thanks! I got stuck on this one as well. The wording was what threw me off.