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The following reaction is performed at 298 K. $2NO(g)+O_{2}(g)⇔2NO_{2}(g)$ The standard free energy of formation of $NO(g)$ is 86.6 kJ/mol at 298 K. What is the standard free energy of formation of $NO_{2}(g)$ at 298 K ? $(K_{P}=1.6×10_{12})$

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