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The rate of reaction of pyridine (C5H5N) and methyl iodide (CH3I) in benzene solution is first-order...

The rate of reaction of pyridine (C5H5N) and methyl iodide (CH3I) in benzene solution is first-order with respect to pyridine and first-order with respect to methyl iodide. The second-order rate constant is k = 74.9 L∙mol-1∙s-1 at 25 °C. If equal volumes of 0.100 M pyridine and 0.100 M methyl iodide are mixed at 25 °C, how many seconds after mixing will the concentration of each be 0.0250 M?

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