A reaction can follow two independent pathways that operate simultaneously: • Pathway…

CHEMISTRY · Subjective · CBSE · Chemistry · Chemical Kinetics · Chemical Kinetics

Problem

A reaction can follow two independent pathways that operate simultaneously: • Pathway I (uncatalyzed): A=1.2×1013 s−1A = 1.2 \times 10^{13}\,s^{-1}, Ea=82 kJ mol−1E_{a} = 82\,\text{kJ}\,mol^{-1} • Pathway II (catalyzed): A=4.5×1010 s−1A = 4.5 \times 10^{10}\,s^{-1}, Ea=38 kJ mol−1E_{a} = 38\,\text{kJ}\,mol^{-1} At 350 K350\,\text{K}, determine which pathway contributes the larger rate constant and calculate the overall rate constant for the reaction (the sum of the individual rate constants). (R=8.314 J mol−1 K−1R = 8.314\,J\,mol^{-1}\,\text{K}^{-1})

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