An unknown sample containing mixed alkali (NaOH, NaHCO3, or Na,CO3) was analyzed using the double flask method. A 250 mg sample was dissolved in 250 mL CO, free water. A 20.0 mL aliquot - this sample required 11.3 mL of 0.009125 M HCI solution to reach the phenolphthalein end point. Another 29.0 mL aliquot of the sample was titrated to the bromocresol green endpoint using 31.1 m of the standard acid. What is/are the component/s of the sample? O NazCO3 only O NAHCO3 only O NaHCOg and Na>CO3 O N2OH and NazCO3 O Cannot be determined
An unknown sample containing mixed alkali (NaOH, NaHCO3, or Na,CO3) was analyzed using the double flask method. A 250 mg sample was dissolved in 250 mL CO, free water. A 20.0 mL aliquot - this sample required 11.3 mL of 0.009125 M HCI solution to reach the phenolphthalein end point. Another 29.0 mL aliquot of the sample was titrated to the bromocresol green endpoint using 31.1 m of the standard acid. What is/are the component/s of the sample? O NazCO3 only O NAHCO3 only O NaHCOg and Na>CO3 O N2OH and NazCO3 O Cannot be determined
Chapter16: Applications Of Neutralization Titrations
Section: Chapter Questions
Problem 16.37QAP
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