A student plots (in kJ mol⁻¹) versus for a reaction at an unknown constant…

CHEMISTRY · Single correct · AP · Chemistry · Thermodynamics and Electrochemistry · Thermodynamics and Electrochemistry

Problem

A student plots

\Delta G^{\circ}

(in kJ mol⁻¹) versus

\ln K

for a reaction at an unknown constant temperature and records two points:

(\ln K = 0.50,\; \Delta G^{\circ} = -1.23\,\text{kJ mol}^{-1})

and

(\ln K = 2.00,\; \Delta G^{\circ} = -4.92\,\text{kJ mol}^{-1})

. Assuming ideal behavior, which temperature is most consistent with these data? (

R = 8.314\,\text{J mol}^{-1}\,\text{K}^{-1}

) (a)

150\ \text{K}

(b)

600\ \text{K}

(c)

300\ \text{K}

(d)

1200\ \text{K}