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14 June, 18:30

Calculate the hydronium ion, [ H30+], and hydroxide ion, [OH-], concentrations for a

0.0117 M HCl Solution.

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Answers (1)
  1. 14 June, 20:51
    0
    [H3O+] = 0.0117 M

    [OH-] = 8.5 * 10^-13 M

    Explanation:

    Step 1: Data given

    Concentration of HCl = 0.0117 M

    Step 2:

    HCl is a strong acid

    pH of a strong acid = - log[H+] = - log[H3O+]

    [H3O+] = 0.0117 M

    pH = - log (0.0117)

    pH = 1.93

    pOH = 14 - 1.93 = 12.07

    pOH = - log[OH+] = 12.07

    [OH-] = 10^-12.07 = 8.5 * 10^-13

    Or

    Kw / [H3O+] = [ OH-]

    10^-14 / 0.0117 = 8.5*10^-13
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