Use an acid-base titration to calculate the molar mass of an acid. A 0.8699-g sample of an unknown monoprotic acid is dissolved in water and titrated with standardized sodium hydroxide. The equivalence point in the titration is reached after the addition of 31.87 mL of 0.2852 M sodium hydroxide to the sample of the unknown acid. Calculate the molar mass of the acid. g/mol Check & Submit Answer Show Approach
Use an acid-base titration to calculate the molar mass of an acid. A 0.8699-g sample of an unknown monoprotic acid is dissolved in water and titrated with standardized sodium hydroxide. The equivalence point in the titration is reached after the addition of 31.87 mL of 0.2852 M sodium hydroxide to the sample of the unknown acid. Calculate the molar mass of the acid. g/mol Check & Submit Answer Show Approach
Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter15: Additional Aqueous Equilibria
Section: Chapter Questions
Problem 93QRT: When 40.00 mL of a weak monoprotic acid solution is titrated with 0.100-M NaOH, the equivalence...
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Transcribed Image Text:Use an acid-base titration to calculate the molar mass of an acid.
A 0.8699-g sample of an unknown monoprotic acid is dissolved in water and titrated with standardized sodium hydroxide. The
equivalence point in the titration is reached after the addition of 31.87 mL of 0.2852 M sodium hydroxide to the sample of the unknown
acid. Calculate the molar mass of the acid.
g/mol
Check & Submit Answer
Show Approach
Oxidation-Reduction Titrations
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Expert Solution
Introduction
mass of the acid = 0.8699 g
molarity of NaOH = 0.2852 M
volume of NaOH = 31.87 mL = 0.03187 L
At the end point,
moles of NaOH = moles of the monoprotic acid
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