Question:

What is the concentration of H3O+ if the pH of the solution is 3?

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can someone show the working out for this please

and also

b) What is the concentration of OH- if the pH of the solution is 3

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  1. pH = -log (H3O+)

    => 3 = -log (H3O+)

    => -3 = log (H3O+)

    => antilog(-3) = (H3O+)

    => 0.001 = (H3O+)

    Also pH + pOH = 14

    => pOH = 14 - 3 = 11

    and (OH) = Antilog(11) = 0.00000000001

    hope to answer you well. keep smiling. bye.

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