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A 35.0 mL solution of a Co2+ with concentration 0.20 M is titrated with a 0.10 M EDTA solution buffered at pH=9. Find the

A 35.0 mL solution of a Co2+ with concentration 0.20 M is titrated with a 0.10 M EDTA solution buffered at pH=9. Find the pCo2+ after adding the following volumes of titrant: a)Vadded- 20.0 mL, b)Vadded- 70.0 mL, c)Vadded- 80.0 mL. log Kf (COEDTA-)=2.81x 1016

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