An analytical chemist weighs out 0.181 g of an unknown diprotic acid into a 250 mL volumetric flask and dilutes to the mark with distilled water. She then titrates this solution with 0.1700 M NaOH solution. When the titration reaches the equivalence point, the chemist finds she has added 15.9 mL of NaOH solution. Calculate the molar mass of the unknown acid. Be sure your answer has the correct number of significant digits.

Introductory Chemistry For Today
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Chapter9: Acids, Bases, And Salts
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Problem 9.97E
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An analytical chemist weighs out 0.181 g of an unknown diprotic acid into a 250 mL volumetric flask and dilutes to the mark
with distilled water. She then titrates this solution with 0.1700 M NaOH solution. When the titration reaches the
equivalence point, the chemist finds she has added 15.9 mL of NaOH solution.
Calculate the molar mass of the unknown acid. Be sure your answer has the correct number of significant digits.
ol.
g
mol
Ar
Transcribed Image Text:An analytical chemist weighs out 0.181 g of an unknown diprotic acid into a 250 mL volumetric flask and dilutes to the mark with distilled water. She then titrates this solution with 0.1700 M NaOH solution. When the titration reaches the equivalence point, the chemist finds she has added 15.9 mL of NaOH solution. Calculate the molar mass of the unknown acid. Be sure your answer has the correct number of significant digits. ol. g mol Ar
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