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    Recognizing the Order of a Reaction

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    In the reaction 2 A + 2 B ----> C + 3 D the rate of disappearance of A is -2.2 X 10^-4 M s -1. What is the rate of formation of C?

    The answer states A = to 1.1 x 10^-4 M/s.

    What happened to the "-1" in this situation? Can these measures for rates, Ms^-1 and s-1, be used to help identify first second and third order?

    When looking at these types of problems, what is the quickest way to recognize the order?

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    Solution Preview

    There are two ways of writing the same thing, because x^-1 = 1/x. Look at that carefully to make sure you understand that.

    Therefore, 1.1 x 10^-4 M/s is the same as 1.1 X 10^-4 M s^-1. Okay? So, no problem ...

    Solution Summary

    This solution includes an explanation and three additional examples.