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TextbooksChemistryChemical Principles in the LaboratoryChapter 21

Chapter 21

Chemical Principles in the Laboratory · 1 exercises

Problem 2

For Reaction Mixture 1 , the student found that 92 seconds were required. On dividing Equation 5 for Reaction Mixture 1 by Equation 5 for Reaction Mixture \(4,\) and after canceling out the common terms \(\left(k^{\prime} \text { and terms in }\left[\mathrm{I}^{-}\right] \text {and }\left[\mathrm{BrO}_{3}^{-}\right]\right)\), they got the following equation: $$\frac{10.9}{45}=\left(\frac{0.020}{0.040}\right)^{p}=\left(\frac{1}{2}\right)$$ Recognizing that \(10.9 / 45\) is about equal to one-fourth, they obtained an approximate value for \(p .\) What was that value?\(p=\)_______. By taking logarithms of both sides of the equation, the student got an exact value for \(p\). What was that value? Since orders of reactions are often integers, the student rounded their value of \(p\) to the nearest integer and reported that value as the order of the reaction with respect to \(\mathbf{H}^{+}\). \(p=\)_______.

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