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11 August, 14:47

Determine the [oh-] concentration of a 0.741 m koh solution at 25°c.

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  1. 11 August, 15:10
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    KOH ionizes as follow,

    KOH → K⁺ + OH⁻

    Concentration of OH⁻ is 0.741 M, calculating for pOH,

    pOH = - log [OH ⁻ ]

    pOH = - log (0.741)

    pOH = 0.130

    Also,

    pH + pOH = 14

    pH + 0.130 = 14

    pH = 14 - 0.130

    pH = 13.87
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