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A solution prepared by mixing NaOH with NaHCO3 was diluted to 500 mL with water. A 25.00 mL aliquot was titrated with 0.1202 M HCI. The buret read 14.37 mL at the Ph endpoint and 38.52 mL at the MR endpoint. What were the concentrations of the substances in the 500-mL solution? Clue: what happens when NaOH and NHCO3 are combined? What species are present after the mixing? From the volume of HCI used up for the Ph and MR endpoints, what can be deduced?

A solution prepared by mixing NaOH with NaHCO3 was diluted to 500 mL with water. A 25.00 mL aliquot was titrated with 0.1202 M HCI. The buret read 14.37 mL at the Ph endpoint and 38.52 mL at the MR endpoint. What were the concentrations of the substances in the 500-mL solution? Clue: what happens when NaOH and NHCO3 are combined? What species are present after the mixing? From the volume of HCI used up for the Ph and MR endpoints, what can be deduced?

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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A solution prepared by mixing NaOH with NaHCO3 was diluted to 500 mL with water. A 25.00 mL aliquot was titrated with 0.1202 M HCI. The buret read 14.37 mL at the Ph endpoint and 38.52 mL at the MR endpoint. What were the concentrations of the substances in the 500-mL solution? Clue: what happens when NaOH and NHCO3 are combined? What species are present after the mixing? From the volume of HCI used up for the Ph and MR endpoints, what can be deduced?
Transcribed Image Text:A solution prepared by mixing NaOH with NaHCO3 was diluted to 500 mL with water. A 25.00 mL aliquot was titrated with 0.1202 M HCI. The buret read 14.37 mL at the Ph endpoint and 38.52 mL at the MR endpoint. What were the concentrations of the substances in the 500-mL solution? Clue: what happens when NaOH and NHCO3 are combined? What species are present after the mixing? From the volume of HCI used up for the Ph and MR endpoints, what can be deduced?
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