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AP Chemistry

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A solution of sodium hydroxide is standardized against potassium hydrogen phthalate (KHP, formula weight 204.2 g/mol). From the following data, calculate the molarity of the NaOH solution: mass of KHP 1.234 g; buret reading before titration 0.23 mL; buret
reading after titration 48.87 mL.
Answer in units of M.

  • AP Chemistry - ,

    moles KHP = grams/molar mass
    You are titrating one H with one OH; therefore, moles NaOH must be the same as moles KHP.
    moles NaOH = M x L.
    YOu know moles NaOH and volume (in mL, convert to L and volume = difference in final buret reading - initial buret reading). Solve for M

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