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15 March, 13:19

The rate law for a hypothetical reaction is rate = k [A]2. When the concentration is 0.10 moles/liter, the rate is 2.7 * 10-5 M*s-1. What is the value of k? A. 2.7 * 10-3 B. 2.7 * 10-3 M-1s-1 C. 7.2 * 105 M-1s-1 D. 2.7 * 10-4 M-1s-1

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  1. 15 March, 13:27
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    Rate = k[A]^2

    2.7 x 10^-5 = k[0.10]^2

    k = 2.7 x 10^-5 / 0.01 = 2.7 x 10^-3

    The correct answer is option B.
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