A second 20ml aliquot was mixed with 10ml of 50ppm quinine, Ask an Expert

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a 2.196 g tablet was dissolved in sufficient 0.10 M HCl to give a 1.0L solution. Dilution of a 20ml aliquot to 100ml gave a solution with a reading of 540 at 347.5nm. A second 20ml aliquot was mixed with 10ml of 50ppm quinine solution before dilution to 100ml. The flourescence intensity of this solution was 600. Calculate the concentration in ppm in the tablet.

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