We’re being asked to determine the **ΔG°** for the given reaction:

2CO(g)+2NO(g)→2CO_{2}(g)+N_{2}(g).

We can use the following equation to solve for ** ΔG˚_{rxn}**:

$\overline{){\mathbf{\Delta G}}{{\mathbf{\xb0}}}_{{\mathbf{rxn}}}{\mathbf{=}}{\mathbf{\Delta G}}{{\mathbf{\xb0}}}_{\mathbf{f}\mathbf{,}\mathbf{}\mathbf{prod}}{\mathbf{-}}{\mathbf{\Delta G}}{{\mathbf{\xb0}}}_{\mathbf{f}\mathbf{,}\mathbf{}\mathbf{react}}}$

Note that we need to *multiply each ΔG˚ _{f} by the stoichiometric coefficient* since ΔG˚

2CO(g)+2NO(g)→2CO_{2}(g)+N_{2}(g).

Use standard free energies of formation to determine Δ*G*∘rxn for this reaction at 25°C.

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