The uncatalyzed decomposition of substance X has an activation energy of 75 kJ mol

CHEMISTRY · Single correct · CBSE · Chemistry · Chemical Kinetics · Chemical Kinetics

Problem

^{-1}

. A catalyst lowers the activation energy to 40 kJ mol

^{-1}

. Assuming the pre-exponential factor is the same for both pathways, by what factor is the rate constant increased at 298 K? (Use

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

.) (a)

1.0\times10^{7}

(b)

1.0

(c)

1.3\times10^{6}

(d)

4.7\times10^{3}