The determination in 15-9 was modified to use the standard-additionmethod. In this case
Chapter 15, Problem 15-10(choose chapter or problem)
The determination in 15-9 was modified to use the standard-additionmethod. In this case, a 4.236-g tablet was dissolved in sufficient 0.10 M HCl togive 1.000 L. Dilution of a 20.00-mL aliquot to 100 mL yielded a solution thatgave a reading of 448 at 347.5 nm. A second 20.00-mL aliquot was mixed with10.0 mL of 50-ppm quinine solution before dilution to 100 mL. The fluorescenceintensity of this solution was 525. Calculate the percentage of quinine in thetablet.
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