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27 September, 15:46

What is the pH of a solution with a hydronium ion concentration of 5.6 * 10-7?

(pH = - log[H3O+])

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  1. 27 September, 15:59
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    The pH is calculated with the formula pH = - log [H3O+], where [H3O+] is the concentration of H3O+

    => [H3O+] = 5.6 * 10^ - 7.

    => pH = - log (5.6 * 10 ^-7) = 6.25

    That is a slightly acid pH, because pH is in the range 0 to 14, and 7 is neutral.

    Answer: pH = 6.25
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