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2 June, 22:26

What is the [h+] in a bleach sample that registers 9.55 using a ph meter? 0.98 m 0.000 000 002 8 m 0.000 000 003 5 m 0.000 000 000 28 m 0.000 000 000 35 m?

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  1. 2 June, 23:19
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    PH is a scale which measures the acidity or alkalinity of a solution. It ranges from a level of 1 to 14. A pH which range from 1 to 6 represents an acidic substance. At pH of 7, signifies the solution is neutral. And at a pH of 8-14 represents a basic solution. pH is expressed as the negative logarithm of the concentration of hydronium ions.

    pH = - log [H+]

    Substituting pH and evaluating [H+]

    9.55 = - log [H+]

    10^-9.55 = 10^log [H+]

    10^-9.55 = [H+]

    [H+] = 2.82x10^-10 M or 0.000000000282 M

    Therefore, the hydrogen ion concentration in a solution with a pH of 9.55 is 0.000000000282 M, option 3.
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