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18 December, 12:59

Use the acidity model pH=-log10 [H+], where acidity (pH) is a measure of the hydrogeon ion concentration [H+] (measured in Miles of hydrogen per liter) of a solution.

Connie the hydrogen ion concentration of a solution that has a pH of 4.3 (Enter your answer in scientific notacion. Round the decimal Value to one decimal place)

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  1. 18 December, 13:26
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    5.0*10^5 M

    Step-by-step explanation:

    Since we have defined pH as the negative logarithm of hydrogen ion concentration. This implies that mathematically we can write;

    pH = - log[H^+] of course, log here is the same as log10 (logarithm to base 10).

    Hence I can rewrite the definition of pH above as the negative logarithm to base 10 of hydrogen (or oxonium) ion concentration.

    Since

    pH = - log[H^+]

    It follows that;

    [H^+] = Antilog (-pH)

    Hence if the pH of the solution has been given as 4.3

    [H^+] = Antilog (-4.3)

    [H^+] = 5.0*10^5 M
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