The equilibriumhas been studied using a laser-induced temperature-jump technique. Relaxati...

The equilibrium

has been studied using a laser-induced temperature-jump technique. Relaxation times were measured at various equi librium concentrations of the reactants at 25 °C:

a. Calculate k1 and k-1 for this system at 25 °C.

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b. Compare your results with the value for the equilibrium constant, K = 720 using molar standard states.

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c. Use simple diffusion theory to estimate a value for k1. For I- and I2, the effective radii are 0.216 nm and 0.252 nm respectively, and diffusion coefficients are 2.05 X 10-9 m2 s-1 and 2.25 X 10-9 m2 s-1 respectively. Comparing this result with the experimental value from part (a), what do you conclude about the effectiveness of collisions of I- and I2 in leading to reaction?