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Today, 09:20

In each row, the box under the compound that can reasonably be expected to be more acidic in aqueous solution, e. g. have the larger Ka.

H2 TeO4 H2TeO3

HClO2 HClO

HClO HBrO

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  1. Today, 12:33
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    H2TeO3

    HClO2

    HClO

    Explanation:

    Ka is the value of the equilibrium constant of the acids. As higher is it's valued, as higher is the value of the concentration of H+, so more acidic is the solution. Another way to determine the acidic is to obtain the pKa = - logKa, in this case, as larger the pKa, as less acidic is the solution. The values of pKa can be found at analytic tables.

    First row:

    H2, pKa = 15.74

    TeO4, pKa = 11

    H2TeO3, pKa1 = 2.7

    More acidic = H2TeO3

    Second row:

    HClO2, pKa = 1.94

    HClO, pKa = 7.40

    More acidic = HClO2

    Third row:

    HClO, pKa = 7.40

    HBrO, pKa = 8.55

    More acidic = HClO
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