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28. Answer ALL parts of this question. Suppose you were researching a drug, A, whose kinetics were unknown, and were undertaking in vitro studies of the decomposition of the drug in the presence of, for example, an enzyme extract. Write a brief account showing how, with no prior knowledge, you would establish whether the drug decomposition obeyed zero, first, or second-order kinetics with regard to its concentration, [A]. 7 Question 28 continued on page 8... Continuation of question 28: You may ignore such cases as fractional order, or orders higher than second. No derivations are required, but you should show use of integrated rate expressions to demonstrate the process of establishing the rate constant. (10 marks)