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0.5123 g KHP sample was dissolved in about 25 mL of distilled water, and titrated to the phenolphthalein endpoint with 28.75 mL of a sodium hydroxide solution. Calculate the molar concentration of the hydroxide solution

  • chemistry -

    KHP + NaOH ==> NaHP + H2O

    moles KHP = grams/molar mass
    Solve for moles.
    Look at the equation; it is 1:1 so moles KHP = moles NaOH.]
    The M NaOH = moles NaOH/L NaOH.

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