An analytical chemist weighs out 0.280 g of an unknown triprotic acid into a 250 mL volumetric flask and dilutes to the mark withdistilled water. She then titrates this solution with 0.1400M NaOH solution. When the titration reaches the equivalence point, thechemist finds she has added 31.2 mL of NaOH solution.Calculate the molar mass of the unknown acid. Be sure your answer has the correct number of significant digits.gmol

Molarity is an important method which is generally used to find out the concentration of a solution.…

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Calculate the molar mass of the unknown acid. Be sure your answer has the correct number of significant digits. g mol

Introductory Chemistry For Today

8th Edition

ISBN:9781285644561

Author:Seager

Publisher:Seager

Chapter9: Acids, Bases, And Salts

Section: Chapter Questions

Problem 9.97E

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Concept explainers

Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.

Question

An analytical chemist weighs out 0.280 g of an unknown triprotic acid into a 250 mL volumetric flask and dilutes to the mark with
distilled water. She then titrates this solution with 0.1400M NaOH solution. When the titration reaches the equivalence point, the
chemist finds she has added 31.2 mL of NaOH solution.
Calculate the molar mass of the unknown acid. Be sure your answer has the correct number of significant digits.
g
mol

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