A solution contains KHCO3, K2CO3 and KOH either alone or in permissible combination. A 50.0 mL aliquot requires 25.0 mL of 0.100 M HCI to reach the phenolphthalein end point. Another 50.0 mL aliquot requires 45.0 mL of the same acid to reach the bromocresol green end point. Which of the following statements BEST describes the composition of the sample solution? O The solution contains more KOH than K2CO3. O The solution contains K2CO3 only. O The solution contains more KHCO3 than K2CO3. O The solution contains a mixture of KHCO3 and KOH. O The solution contains KOH only. O The solution contains more K2CO3 than KOH.
A solution contains KHCO3, K2CO3 and KOH either alone or in permissible combination. A 50.0 mL aliquot requires 25.0 mL of 0.100 M HCI to reach the phenolphthalein end point. Another 50.0 mL aliquot requires 45.0 mL of the same acid to reach the bromocresol green end point. Which of the following statements BEST describes the composition of the sample solution? O The solution contains more KOH than K2CO3. O The solution contains K2CO3 only. O The solution contains more KHCO3 than K2CO3. O The solution contains a mixture of KHCO3 and KOH. O The solution contains KOH only. O The solution contains more K2CO3 than KOH.
Chapter31: Introduction To Analytical Separations
Section: Chapter Questions
Problem 31.17QAP
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