The decomposition of NO2(g) occurs by the following bimolecular elementary reaction:
2NO2(g) → 2NO(g) + O2(g) The rate constant at 273 K is 2.3 × 10-12 L mol-1s-1, and the activation energy is 111 kJ/mol. How long will it take for the concentration of NO2(g) to decrease from an initial partial pressure of 2.5 atm to 1.5 atm at 500. K? Assume ideal gas behavior.