3. A 0.3246 g sample that might contain NaOH, Na₂CO,, NaHCO, or a permissible mixture of the bases is titrated with 0.0828 M HC by the double-indicator method. It is found that 30.38 ml of the acid are required to reach the phenolphthalein end point. Methyl orange is then added to the solution and the titration continued using an additional of 7.83 ml of the acid. Calculate the % of each in the sample?
3. A 0.3246 g sample that might contain NaOH, Na₂CO,, NaHCO, or a permissible mixture of the bases is titrated with 0.0828 M HC by the double-indicator method. It is found that 30.38 ml of the acid are required to reach the phenolphthalein end point. Methyl orange is then added to the solution and the titration continued using an additional of 7.83 ml of the acid. Calculate the % of each in the sample?
Chapter13: Titrations In Analytical Chemistry
Section: Chapter Questions
Problem 13.28QAP
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