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10 December, 13:31

the reaction rate constant for a particular second order reaction is 0.47 L/mol sec. If the initial concentration of reactant is. 25 mol/L, how many seconds will it take for the concentration to decrease to. 13 mol/L

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  1. 10 December, 17:17
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    7.9 s

    Explanation:

    Given data

    Initial concentration of A ([A]₀) : 0.25 M Final concentration of A ([A]) : 0.13 M Rate constant (k) : 0.47 L/mol. s Time (t) : ?

    Let's consider the concentration-time equation for a second-order reaction.

    1/[A] = 1/[A]₀ + k. t

    1/[A] - 1/[A]₀ = + k. t

    t = 1/[A] - 1/[A]₀ / k

    t = 1/0.13 M - 1/0.25 M / 0.47 L/mol. s

    t = 7.9 s
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