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18 October, 13:54

The data in the table below were obtained for the reaction: 2clo2 (aq) + 2 oh - (aq) - - > clo3 - (aq) + clo2 - (aq) + h2o (l) experiment [clo2] (m) [oh-] (m) initial rate (m/s) 1 0.060 0.030 0.0248 2 0.020 0.030 0.00276 3 0.020 0.090 0.00828 what is the order of the reaction with respect to clo2?

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  1. 18 October, 15:03
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    Lets organise the data given in the question

    [ClO₂] (m) [OH⁻] (m) initial rate (m/s)

    0.060 0.030 0.0248

    0.020 0.030 0.00276

    0.020 0.090 0.00828

    rate equation as follows

    rate = k [ ClO₂]ᵃ [OH⁻]ᵇ

    where k - rate constant

    we need to find order with respect to ClO₂ therefore lets take the 2 equations where OH⁻ is constant.

    1) 0.00276 = k [0.020]ᵃ[0.030]ᵇ

    2) 0.0248 = k [0.060]ᵃ[0.030]ᵇ

    divide first equation from the second

    0.0248/0.00276 = [0.060/0.020]ᵇ

    8.99 = 3ᵇ

    8.99 rounded off to 9

    9 = 3ᵇ

    b = 2

    order with respect to ClO₂ is 2
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