At , two unrelated reactions have the following thermodynamic and kinetic data: •…

CHEMISTRY · Subjective · AP · Chemistry · Thermodynamics and Electrochemistry · Thermodynamics and Electrochemistry

Problem

298\,\text{K}

, two unrelated reactions have the following thermodynamic and kinetic data: • Reaction A:

\Delta G^\circ = -45\,\text{kJ mol}^{-1}

E_a = 75\,\text{kJ mol}^{-1}

• Reaction B:

\Delta G^\circ = -10\,\text{kJ mol}^{-1}

E_a = 150\,\text{kJ mol}^{-1}

Both start with comparable reactant concentrations. Identify which reaction is more likely to reach at least

50\%

completion within one hour at

298\,\text{K}

and justify your choice in one or two sentences.