What is the molar mass of an unknown triprotic acid if 0.0913 g of the acid is titrated, and the first equivalence volume is reached after having delivered 19.32 mL of a 0.1000 M KOH solution? Group of answer choices 94.5 g/mol 47.3 g/mol 142 g/mol 21.2 g/mol 15.8 g/mol

Chemistry: Principles and Reactions
8th Edition
ISBN:9781305079373
Author:William L. Masterton, Cecile N. Hurley
Publisher:William L. Masterton, Cecile N. Hurley
Chapter14: Equilibria In Acid-base Solutions
Section: Chapter Questions
Problem 72QAP: Four grams of a monoprotic weak acid are dissolved in water to make 250.0 mL of solution with a pH...
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What is the molar mass of an unknown triprotic acid if 0.0913 g of the acid is titrated, and the first equivalence volume is reached after having delivered 19.32 mL of a 0.1000 M KOH solution?

Group of answer choices
94.5 g/mol
47.3 g/mol
142 g/mol
21.2 g/mol
15.8 g/mol
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