Express your answer in terms of the concentration of

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What is the integrated rate law if the initial concentrations of iodine and aniline are equal? Express your answer in terms of the concentration of iodine. [2 marks] Note: It is not necessary to show the derivation.
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(b) The following titration data were obtained in one run with and : t (min) V (mL) 0.00 7.23 10.25 5.85 20.60 5.03 29.85 4.40 40.11 3.90 49.63 3.51 59.88 3.21 70.69 2.94 80.80 2.66 Calculate the rate constant for the reaction. [10 marks] 9. For the elementary reaction and the equilibrium constant at 298.15K. What is the value of k - ? [4 marks]
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10. In enzyme reactions, it is not uncommon for the enzyme to be left in an unreactive conformation after release of the product. A subsequent reaction converts the enzyme back to the active form. Symbolically, the mechanism is where E is the active form of the enzyme and F its inactive form, S is the substrate, P the product, and C the enzyme-substrate complex. Derive the rate law for this mechanism using the steady-state and/or equilibrium approximations, as appropriate. Is this mechanism kinetically distinguishable from the Michaelis-Menten mechanism? [10 marks] 11. Briefly describe how you can recognize competitive inhibition of an enzyme-catalyzed reaction
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using Eadie-Hofstee plots. [5 marks] 12. In class, we found that the product ratio for parallel first-order reactions is just The product ratio of course varies with T since both k 1 and k 2 vary with T . Suppose that at , p 1 / p 2 = 20 while at , p 1 / p 2 = 15. What is the difference in the activation energies of the two reactions? Make sure that your answer makes it clear which of the two reactions has the higher
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  • Fall '06
  • Roussel
  • pH, Chemical reaction, 10ml, 6 hours, 1min

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