For an isothermal reaction at 350 K

CHEMISTRY · Single correct · A Level · Chemistry · Kinetics · Kinetics

Problem

For an isothermal reaction A(g)⇌B(g)\text{A}(g) \rightleftharpoons \text{B}(g) at 350 K, the uncatalyzed rate constants are kf=1.0×10−3 s−1k_{\text{f}}=1.0\times10^{-3}\,\text{s}^{-1} and kr=5.0×10−4 s−1k_{\text{r}}=5.0\times10^{-4}\,\text{s}^{-1}. A suitable catalyst increases each rate constant by exactly a factor of 100. What is the numerical value of the equilibrium constant before and after the catalyst is added? (a) Before: 2.02.0; After: 200200 (b) Before: 0.500.50; After: 0.500.50 (c) Before: 2.02.0; After: 2.02.0 (d) Before: 2.02.0; After: 0.0200.020

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