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14 June, 00:11

The initial concentration of reactant in a first-order reaction is 0.27 m. the rate constant for the reaction is 0.75 s-1. what is the concentration (mol/l) of reactant after 1.5 s?

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  1. 14 June, 00:19
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    The concentration in mol/l of reactant after 1.5 s is calculated as follows

    from first order integrated equation

    In (A) t = - Kt + In (A) o where

    At = final concentration = ?

    A) o = initial concentration = 0.27 M

    K = constant=0.75

    T=temperature = 1.5 s

    in (A) t = - 0.75 (1.5) + in (0.27)

    In (A) t = - 1.125 + - 1.31 = - 2.435

    In (A) t = - 2.435

    In (A) t = e

    find the e value

    (A) t is therefore = 0.0876 mol/l
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