HW_3 - CHEM 150 HOMEWORK #3 Due: Thursday, 7/3/08 1....

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CHEM 150 HOMEWORK #3 Due: Thursday, 7/3/08 1. Calculate α for a solution of pH = 5.00 produced from sulfurous acid (H 2 SO 3 K a1 = 1.72 x 10 -2 and K a2 = 6.43 x 10 -8 ). 2. The ion M 4+ (100.0 mL of 0.0500 M metal ion buffered to pH = 9.000) was titrated with 0.0500 M EDTA. What is the concentration of M 4+ at the equivalence point? 3. Calculate pCo 2+ when 12.00 mL of 0.03855M EDTA is added to 25.00 mL of 0.02026 M Co 2+ at pH = 6.000. 4. Calculate pCu 2+ when 45.00mL of 0.00100 M EDTA is added to 50.00 mL of 0.00100 M Cu 2+ at pH = 11.00 and whose NH 3 concentration is fixed at 0.100 M. 5. A 50.00mL solution containing a mixture of Ni 2+ and Zn 2+ was treated with 25.0
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This note was uploaded on 08/06/2008 for the course CHEM 150 taught by Professor Buratto during the Summer '08 term at UCSB.

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