A sample may contain NaOH, NaHCO3 and Na2CO3, alone or in some combination along with inert material. A 567.8 mg sample was dissolved and titrated with 0.1503 M HCl 23.14 mL of HCl was used to reach the phenolphthalein endpoint and an additional 16.90 mL to reach the methyl red end point. a) What are the composition of the sample? b) Calculate the percentage of each titrated component.
A sample may contain NaOH, NaHCO3 and Na2CO3, alone or in some combination along with inert material. A 567.8 mg sample was dissolved and titrated with 0.1503 M HCl 23.14 mL of HCl was used to reach the phenolphthalein endpoint and an additional 16.90 mL to reach the methyl red end point. a) What are the composition of the sample? b) Calculate the percentage of each titrated component.
Chemistry & Chemical Reactivity
10th Edition
ISBN:9781337399074
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter4: Stoichiometry: Quantitative Information About Chemical Reactions
Section4.9: Spectrophotometry
Problem 3.1ACP
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3. A sample may contain NaOH, NaHCO3 and Na2CO3, alone or in some combination along with
inert material. A 567.8 mg sample was dissolved and titrated with 0.1503 M HCl 23.14 mL of HCl was used to reach the phenolphthalein endpoint and an additional 16.90 mL to reach the methyl red end point. a) What are the composition of the sample? b) Calculate the percentage of each titrated component.
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