(1 mark) The following data were collected for a reaction of type: A + B Products where [B] was 0.25 M after the reactant solutions were mixed, i.e. a large excess. Complete the last three columns: Time (s) [A] (M) – [A] – ln[A] 1/[A] 0 1.00 × 10–3 5 6.07 × 10–4 10 3.68 × 10–4 15 2.23 × 10–4 20 1.35 × 10–4 2.
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(1 mark) The following data were collected for a reaction of type: A + B Products where [B] was 0.25 M after the reactant solutions were mixed, i.e. a large excess. Complete the last three columns: Time (s) [A] (M) – [A] – ln[A] 1/[A] 0 1.00 × 10–3 5 6.07 × 10–4 10 3.68 × 10–4 15 2.23 × 10–4 20 1.35 × 10–4 2. (1 mark) Determine the order of the reaction with respect to A and the value of the pseudo rate constant, keff-1. Your answer must include graphs, drawn neatly by hand on graph paper or generated by a computer spreadsheet program, as well as a brief explanation. Freehand sketches of the graphs are not acceptable. 3. (2 marks) The following data were collected using a concentration [B] = 0.50 M in the reaction mixture. Time (s) [A] (M) third colunm 0 1.00 × 10–3 5 1.35 × 10–4 10 1.83 × 10–5 15 2.48 × 10–6 20 3.36 × 10–7 Using the appropriate function of concentration as determined in Question 3, complete the third column in the table, labeling it to indicate which function you used. Plot a graph to determine the new pseudo rate constant, keff-2, and then, by comparing it to the value from question 3, calculate the order of the reaction with respect to the reactant, B. (1 mark) Calculate the average overall rate constant, k, from the two pseudo rate constants from Questions 3 and 4, and write down the complete rate law.
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