27. A 0.2564-g sample of primary standard potassium hydrogen phthalate (204.23 g/mol) was titrated with 11.47mL NAOH. The excess was back-titrated with 1.42mL HCI. In a separate experiment, 1.000mL HCI neutralized 0.8988 ml of the NaOH. Calculate the molarities of the HCI and NaOH.

27. A 0.2564-g sample of primary standard potassium hydrogen phthalate (204.23 g/mol) was titrated with 11.47mL NAOH. The excess was back-titrated with 1.42mL HCI. In a separate experiment, 1.000mL HCI neutralized 0.8988 ml of the NaOH. Calculate the molarities of the HCI and NaOH.

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter17: Complexation And Precipitation Reactions And Titrations

Section: Chapter Questions

Problem 17.35QAP

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Concept explainers

Acid Base Titration

An acid-base titration is the method of quantitative analysis for determining the concentration of an acid and base by exactly neutralizing it with a standard solution of base or acid having known concentration.

Question

27.
A 0.2564-g sample of primary standard potassium hydrogen phthalate (204.23 g/mol) was titrated with
11.47mL NAOH. The excess was back-titrated with 1.42mL HCI. In a separate experiment, 1.000mL HCI
neutralized 0.8988 ml of the NaOH. Calculate the molarities of the HCI and NaOH.

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