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Science · Chemistry
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You are titrating 100.0 mL of 0.040 M Ca2+ with 0.080 M EDTA at pH = 9.00. Log Kf for the Ca2+ - EDTA complex is 10.65, and the fraction of free EDTA in the Y4- form, aY4-, is 0.041 at pH = 9.00

a.            What is the K’f, the conditional formation constant, for Ca2+ at pH = 9.00?

b.            What is the equivalence volume, Ve, in milliliters?

c.            Calculate the concentration of Ca2+ at ½ Ve.

d.            Calculate the concentration of Ca2+ at Ve.

e.            Calculate the concentration of Ca2+ at 1.1Ve.

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