AP Chemistry
9.5 Free Energy and Equilibrium
9.3 Gibbs Free Energy and Thermodynamic Favorability
Consider the gas-phase decomposition reaction represented below, for which \(\Delta G^\circ = +4.8\text{ kJ/mol}_{rxn}\) and \(K_p = 0.14\) at \(298\text{ K}\).
\[\text{N}_2\text{O}_4(g) \rightleftharpoons 2\,\text{NO}_2(g)\]
A rigid, evacuated container at \(298\text{ K}\) is charged with \(\text{N}_2\text{O}_4(g)\) at an initial partial pressure of \(2.0\text{ atm}\) and \(\text{NO}_2(g)\) at an initial partial pressure of \(0.10\text{ atm}\). Which of the following correctly predicts the initial direction in which the reaction will proceed to establish equilibrium, along with the appropriate thermodynamic justification?
\[\text{N}_2\text{O}_4(g) \rightleftharpoons 2\,\text{NO}_2(g)\]
A rigid, evacuated container at \(298\text{ K}\) is charged with \(\text{N}_2\text{O}_4(g)\) at an initial partial pressure of \(2.0\text{ atm}\) and \(\text{NO}_2(g)\) at an initial partial pressure of \(0.10\text{ atm}\). Which of the following correctly predicts the initial direction in which the reaction will proceed to establish equilibrium, along with the appropriate thermodynamic justification?
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