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3:51 PM Tue Oct 29 chem 315 Insert Draw View Home -- Insert Space A Text Mode Lasso Select Pg 1 of 6 Chemistry 315 Unit 2B1 4. A 25.00 mL solution containing 0/03110 M Na2C2O4 was titrated with 0.02570 M Ca(NO3)2 to precipitate calcium oxalate: Ca2+ + C2042 → CaC204 (s). Find pCa2+ at the following volumes of Ca(NO3)2. Ksp for CaC2O4 = 1.3 x 10- a) 10.00 mL ANSWER = pCa2+ = 6.06 b) Vea ANSWER = pCa2+ = 3.94 c) 35.00 mL ANSWER = pCa2+ = 2.69 Recommended Harris problems: Ch. 15: 3 (only calculate (Ag*]), 5 (only calculate (Ag*])

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