A 0.4126-g sample of primary-standard Na₂CO₃ was treated with 40.00 mL of dilute perchloric acid. The solution was boiled to remove CO₂, following which the excess HClO₄ was back-titrated with 9.20 mL of dilute NaOH. In a separate experiment, it was established that 26.93 mL of the HClO₄ neutralized the NaOH in a 25.00-mL portion. Calculate the molarities of the HClO₄ and NaOH. Input your answer in compound form (i.e. x.xx M HClO4 and x.xx M NaOH) with the correct significant figures.
A 0.4126-g sample of primary-standard Na₂CO₃ was treated with 40.00 mL of dilute perchloric acid. The solution was boiled to remove CO₂, following which the excess HClO₄ was back-titrated with 9.20 mL of dilute NaOH. In a separate experiment, it was established that 26.93 mL of the HClO₄ neutralized the NaOH in a 25.00-mL portion. Calculate the molarities of the HClO₄ and NaOH. Input your answer in compound form (i.e. x.xx M HClO4 and x.xx M NaOH) with the correct significant figures.
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 109QRT: The grid has six lettered boxes, each of which contains an item that may be used to answer the...
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A 0.4126-g sample of primary-standard Na₂CO₃ was treated with 40.00 mL of dilute perchloric acid. The solution was boiled to remove CO₂, following which the excess HClO₄ was back-titrated with 9.20 mL of dilute NaOH. In a separate experiment, it was established that 26.93 mL of the HClO₄ neutralized the NaOH in a 25.00-mL portion. Calculate the molarities of the HClO₄ and NaOH. Input your answer in compound form (i.e. x.xx M HClO4 and x.xx M NaOH) with the correct significant figures.
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