Reaction Rates (Sections)
Consider the following hypothetical aqueous reaction: A(aq)→ B(aq). A flask is charged with 0.065 mol of A in a total volume of 100.0 mL. The following data are collected:
Time (min) | 0 | 10 | 20 | 30 | 40 |
Moles of A | 0.065 | 0.051 | 0.042 | 0.036 | 0.031 |
(a) Calculate the number of moles of B at each time in the table, assuming that there are no molecules of B at time zero, and that A cleanly converts to B with no intermediates. (b) Calculate the average rate of disappearance of A for each 10-min interval in units of M/s. (c) Between t = 10 min and t = 30 min, what is the average rate of appearance of B in units of M/s? Assume that the volume of the solution is constant.
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