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25 July, 08:01

A solution has a pH of 2.5. What is its [OH-]?

3.2 x 10-3

3.2 x 10-12

3.2 x 10-2

11.5

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  1. 25 July, 09:40
    0
    pH + pOH = 14

    pH = 2.5 then pOH = 11.5

    [OH-] = 10^ (-pOH) = 10^ (-11.5)

    = 3.2 x 10^ (-12)
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