The gas-phase decomposition reaction N₂O₄(g) ⇌ 2 NO₂(g) has at

CHEMISTRY · Subjective · A Level · Chemistry · Thermodynamics · Thermodynamics

Problem

The gas-phase decomposition reaction N₂O₄(g) ⇌ 2 NO₂(g) has

\Delta G^\circ = 4.8\,\text{kJ mol}^{-1}

298\,\text{K}

. A sealed flask at this temperature contains N₂O₄ at

0.20\,\text{atm}

and NO₂ at

1.00\,\text{atm}

. Calculate

\Delta G

(in

\text{kJ mol}^{-1}

of N₂O₄ decomposed) for the reaction under these conditions.