Question

Use this information to calculate es001-1.jpgGrxn.

es001-2.jpg

es001-3.jpg =
kJ

Answer 1

I can do that, but I can’t see the .jpg files you referred to. Please either upload the three images or paste the text (reaction and the numeric data) from them.

While you prepare that, here are the two common ways to get ΔG°rxn and how to supply the numbers so I can calculate it for you:

1) If the images give standard Gibbs energies of formation (ΔGf°) for each species
- Formula:
ΔG°rxn = Σ νi ΔGf°(products) − Σ νj ΔGf°(reactants)
(include stoichiometric coefficients ν)
- Units: make sure all ΔGf° values are in kJ/mol (or convert J → kJ by dividing by 1000).
- Example template you can paste:
Reaction: a A + b B → c C + d D
ΔGf°(A) = ___ kJ/mol, ΔGf°(B) = ___ kJ/mol, ΔGf°(C) = ___ kJ/mol, ΔGf°(D) = ___ kJ/mol
Then I’ll compute ΔG°rxn = c·ΔGf°(C) + d·ΔGf°(D) − a·ΔGf°(A) − b·ΔGf°(B)

2) If the images give standard enthalpies (ΔHf°) and entropies (S°)
- Use:
ΔG°rxn = ΔH°rxn − T ΔS°rxn
where ΔH°rxn = Σ ν ΔHf°(products) − Σ ν ΔHf°(reactants)
ΔS°rxn = Σ ν S°(products) − Σ ν S°(reactants)
- Temperature T must be specified (commonly 298.15 K if not given).
- Units: ΔH in kJ/mol, S in J/(mol·K) → convert S to kJ/(mol·K) by dividing by 1000, or convert ΔH to J then divide final result by 1000.
- Example template to paste:
Reaction: ...
ΔHf°(A) = ___ kJ/mol, S°(A) = ___ J/(mol·K), etc.
Temperature = ___ K (default 298.15 K)

If you upload or paste the data (reaction + the numbers and units), I’ll compute ΔG°rxn and give the answer in kJ (with intermediate steps).