A chemist received different mixtures for analysis with the statement that they contained NaOH, NaHCO3, Na2CO3 or compatible mixtures of these substances together with inert material. From the data given, identify the respective materials. Sample 4. The sample was titrated with acid until the pink of phenolphthalein disappeared; this process required 39.96 mL. On adding an excess of the acid, boiling and titrating back with NaOH, it was found that the base was equivalent to the excess acid. A. NazCO3, NaHCO3 В. NaHCOз O C. Na2CO3 O D. None of these OE. NAOH
A chemist received different mixtures for analysis with the statement that they contained NaOH, NaHCO3, Na2CO3 or compatible mixtures of these substances together with inert material. From the data given, identify the respective materials. Sample 4. The sample was titrated with acid until the pink of phenolphthalein disappeared; this process required 39.96 mL. On adding an excess of the acid, boiling and titrating back with NaOH, it was found that the base was equivalent to the excess acid. A. NazCO3, NaHCO3 В. NaHCOз O C. Na2CO3 O D. None of these OE. NAOH
Principles of Modern Chemistry
8th Edition
ISBN:9781305079113
Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Chapter15: Acid–base Equilibria
Section: Chapter Questions
Problem 97AP
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