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Di campurkan 50mL larutan ch3ooh ka=2x10^-50,2 M dengan 200 mL larutan NaOH 0,05 M ph campuran adalah

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  • mol ch3cooh = 50 ml x 0,2 M = 10 mmol
    mol naoh = 200 ml x 0,05 M = 10 mmol

    ch3cooh + naoh => ch3cooNa + h2o
    10 mmol ~ 10 mmol
    10 mmol ~ 10 mmol ~ 10 mmol ~ 10 mmol
    habis ~ habis ~ 10 mmol ~ 10 mmol

    M garam = n / v total = (10 x 10^-3) / (250 x 10^-3) = 4 x 10^-2

    OH- = √Kw/Ka x Mg
    = √(10^-14 / 2 x 10^-5) x (4 x 10^-2)
    = 1,41 x 10^-5,5

    poh = 5,5 - log 1,41
    ph = 8,5 + log 1,41

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