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11 June, 07:14

A solution has a ph of 10.20 at 25°c. what is the hydroxide-ion concentration at 25°c?

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  1. 11 June, 07:31
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    Using equation:

    pH+pOH=14

    We are given pH=10.20 at 25°c.

    So putting this value in the equation,

    We have pOH=14-10.20

    = 3.8

    pOH=-log (OH)

    -log (OH) = 3.8

    OH=0.00015M

    So hydroxide concentration will be 0.00015 M.
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