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AP Chemistry
9.3 Gibbs Free Energy and Thermodynamic Favorability
IntermediateMCQGraphicalConceptual18.9k
A line graph plotting standard Gibbs free energy change, \(\Delta G^\circ\text{ (kJ/mol)}\), on the vertical y-axis versus absolute temperature, \(T\text{ (K)}\), on the horizontal x-axis. The y-axis ranges from \(-60\) to \(+60\) with major gridlines and tick marks at \(-60\), \(-30\), \(0\), \(30\), and \(60\). The x-axis ranges from \(0\) to \(600\) with major gridlines and tick marks at \(0\), \(100\), \(200\), \(300\), \(400\), \(500\), and \(600\). A single straight solid black trendline begins at \((0, 60)\), passes through \((300, 0)\), and ends at \((600, -60)\). No other text or annotations appear.
Standard Gibbs free energy change as a function of temperature.
A student plots the standard Gibbs free energy change, \(\Delta G^\circ\), as a function of temperature, \(T\), for a chemical reaction, as shown in the graph below. Based on the graph, which of the following claims about the reaction is correct?

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