An elementary reaction has an activation energy of without a catalyst

CHEMISTRY · Single correct · AP · Chemistry · Kinetics · Kinetics

Problem

An elementary reaction has an activation energy of 75 kJ mol−175\,\text{kJ mol}^{-1} without a catalyst. A catalyst lowers the activation energy to 60 kJ mol−160\,\text{kJ mol}^{-1}. If the uncatalyzed reaction occurs at 298 K, what is the approximate factor by which the rate constant increases when BOTH the catalyst is present and the temperature is raised to 318 K? Assume the pre-exponential factor is unaffected by the catalyst and gas constant R=8.314 J mol−1K−1R=8.314\,\text{J mol}^{-1}\text{K}^{-1}. (a) 5×1025\times10^{2} (b) 2×1032\times10^{3} (c) 2×1022\times10^{2} (d) 5×1035\times10^{3}

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