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Buffers_tkl_mcd_F08

Buffers_tkl_mcd_F08 - Chem 1A Fall 2008 Challenge Problem...

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Chem 1A Fall 2008 10/8-10/14 Challenge Problem – Acid, Bases and Buffers Titration Curves The titration of 20mL HCl with NaOH is shown for your reference in the graphs below. The dotted line indicates pH of 7. In the reference titration curves, the HCl has a concentration of 0.10M and the NaOH has a concentration of 0.10M. In each of the graphs, sketch another titration curve for the conditions specified. Your sketches can be rough, but be sure to explain your choice for the initial pH on your new curve relative to the reference explain your choice for the volume at the equivalence point on your new curve relative to the reference mark the equivalence point with a × explain your choice for the pH at the end on your new curve relative to the reference 20 mL of 0.10M weak acid is titrated with 0.10M NaOH 20 mL of 0.20M strong acid is titrated with 0.10M NaOH 20 mL of 0.10M HCO 3 (pKa1= 6.35, pKa2= 10.3) is titrated with 0.10M NaOH pH pH pH Volume of Titrant Volume of Titrant Volume of Titrant 20 mL of 0.10M HCl is titrated with 0.05M NaOH 20 mL of 0.20M strong base is titrated with 0.10M HCl 20 mL of 0.10M weak base is titrated with 0.10M HCl pH pH pH Volume of Titrant Volume of Titrant Volume of Titrant ×
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