A student is conducting molecular weight determination of an unknown diprotic acid. He first prepared a 250 mL NaOH (39.997 g/mol) titrant solution, which he then standardized with 0.5830 g of KHP (204.22g/mol) which consumed 24.02 mL of the titrant. After standardization, he weighed 0.2108 g of unknown diprotic acid and the titration reached the endpoint at a volume of 21.58 mL. (a) What is the standardized concentration of the titrant? Choices: 0.1000 M 0.1189 M 0.1286 M 0.1419 M (b) What is the molar mass of the diprotic acid? Choices: 82.19 g/mol 137.68 g/mol 164.38 g/mol 195.37 g/mol
A student is conducting molecular weight determination of an unknown diprotic acid. He first prepared a 250 mL NaOH (39.997 g/mol) titrant solution, which he then standardized with 0.5830 g of KHP (204.22g/mol) which consumed 24.02 mL of the titrant. After standardization, he weighed 0.2108 g of unknown diprotic acid and the titration reached the endpoint at a volume of 21.58 mL. (a) What is the standardized concentration of the titrant? Choices: 0.1000 M 0.1189 M 0.1286 M 0.1419 M (b) What is the molar mass of the diprotic acid? Choices: 82.19 g/mol 137.68 g/mol 164.38 g/mol 195.37 g/mol
Chemistry & Chemical Reactivity
9th Edition
ISBN:9781133949640
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter17: Principles Of Chemical Reactivity: Other Aspects Of Aqueous Equilibria
Section: Chapter Questions
Problem 105IL: Aniline hydrochloride, (C6H5NH3)Cl, is a weak acid. (Its conjugate base is the weak base aniline,...
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A student is conducting molecular weight determination of an unknown diprotic acid. He first prepared a 250 mL NaOH (39.997 g/mol) titrant solution, which he then standardized with 0.5830 g of KHP (204.22g/mol) which consumed 24.02 mL of the titrant. After standardization, he weighed 0.2108 g of unknown diprotic acid and the titration reached the endpoint at a volume of 21.58 mL.
(a) What is the standardized concentration of the titrant?
Choices:
0.1000 M
0.1189 M
0.1286 M
0.1419 M
(b) What is the molar mass of the diprotic acid?
Choices:
82.19 g/mol
137.68 g/mol
164.38 g/mol
195.37 g/mol
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