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Chemistry

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A 0.2861 gram sample of an unknown acid (HX) required 32.63 mL of 0.1045 M NaOH for neutralization to a phenolphthalein endpoint. What is the molar mass of the acid?

  • Chemistry -

    moles NaOH = M x L
    Moles HX = same (the problem tells you it is HX; therefore, we know the reaction is 1:1 with NaOH).
    moles HX = grams/molar mass.
    You have moles and grams, solve for molar mass.

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