AssignmentSix - or a strong base. Sketch qualitatively...

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Take-Home Assignment #6 Please turn in neatly worked solutions for the following problems. Answers are due by 4:00 PM on Monday, October 8 th . 1. Calculate and graph the exact titration curve for 50.0 mL of 0.025 M hypochlorous acid with 0.050 M NaOH. Be sure to calculate the initial pH, the pH for at least 4 points before the equivalence point, the pH at the equivalence point, and the pH for at least 4 points after the equivalence point. If the titration is feasible, suggest an appropriate indicator. 2. Because oxine is amphoteric a solution of BH may be titrated with either a strong acid
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Unformatted text preview: or a strong base. Sketch qualitatively correct acidbase titration curves for 50.0-mL samples of 10.0 mM oxine with (a) 0.010 M HCl, and (b) 0.010 M NaOH. If possible, suggest an appropriate indicator for each titration and discuss whether one of these titrations appears to be more desirable than the other. The pK a values for oxine are 4.91 and 9.81. 3. Sketch a qualitatively correct acidbase titration curve for the titration of a 25-mL sample of 0.050 M ethylenediamine with 0.050 M HCl. Select a suitable endpoint and an appropriate indicator for that endpoint....
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This note was uploaded on 04/02/2012 for the course CHEMISTRY 222 taught by Professor Mcdonald during the Fall '11 term at University of Illinois, Urbana Champaign.

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