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Use the following data to calculate the value of ΔG°rxn at 298 K for the reaction...

Use the following data to calculate the value of ΔG°rxn at 298 K for the reaction described by the given chemical equation. Include the units.

Compound S°f (J/molK) DH°f (kJ/mol)

CO (g) 197.7 –110.5

H2 (g) 130.7 0

CH4 (g) 186.3 –74.6

H2O (g) 188.8 –241.8

CO (g) + 3H2 (g) → CH4 (g) + H2O (g)

I got -141.9 KJ/mol, but i think the units are wrong and I don't know why.

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