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7 November, 21:11

The pH of solution A is 2.4 , while the pH of solution B is 9.4.

(a) What are their hydrogen-ion concentrations?

(b) How many times greater is the hydrogen-ion concentration of solution A than that of solution B?

(c) By how many orders of magnitude do the concentrations differ?

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  1. 7 November, 22:26
    0
    The answer to your question is below

    Step-by-step explanation:

    pH definition

    pH = - log [H⁺]

    a) For pH = 2.4, solution A

    2.4 = - log[H⁺]

    [H⁺] = antilog⁻².⁴

    [H⁺] = 0.00398

    For pH = 9.4, solution B

    [H⁺] = antilog⁻⁹.⁴

    [H⁺] = 3.98 x 10⁻¹⁰

    b) Divide hydrogen-ion concentration of solution A by hydrogen-ion concentration of solution B.

    0.00398 / 3.98 x 10⁻¹⁰

    10000000 times

    c) By 7, because 7 is the number of zeros
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