50 mL sample solution containing Na2CO3 and NaOH is titrated with 0.2 M HCl solution. Acid consumption is 15 mL in the presence of phenolphthalein indicator. Then, the titration is continued by adding bromocresol green indicator and in the presence of this indicator, the acid consumption is 10 mL. Accordingly, which of the following is the amount of Na2CO3 (in grams) in the sample? (NaOH: 40 g / mol; Na2CO3: 106 g / mol)
50 mL sample solution containing Na2CO3 and NaOH is titrated with 0.2 M HCl solution. Acid consumption is 15 mL in the presence of phenolphthalein indicator. Then, the titration is continued by adding bromocresol green indicator and in the presence of this indicator, the acid consumption is 10 mL. Accordingly, which of the following is the amount of Na2CO3 (in grams) in the sample? (NaOH: 40 g / mol; Na2CO3: 106 g / mol)
Chemistry for Today: General, Organic, and Biochemistry
9th Edition
ISBN:9781305960060
Author:Spencer L. Seager, Michael R. Slabaugh, Maren S. Hansen
Publisher:Spencer L. Seager, Michael R. Slabaugh, Maren S. Hansen
Chapter9: Acids, Bases, And Salts
Section: Chapter Questions
Problem 9.90E
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50 mL sample solution containing Na2CO3 and NaOH is titrated with 0.2 M HCl solution. Acid consumption is 15 mL in the presence of phenolphthalein indicator. Then, the titration is continued by adding bromocresol green indicator and in the presence of this indicator, the acid consumption is 10 mL. Accordingly, which of the following is the amount of Na2CO3 (in grams) in the sample? (NaOH: 40 g / mol; Na2CO3: 106 g / mol)
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