6. A 0.3205 g sample of CaCO, was dissolved in HCl and the resulting solution di

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6. A 0.3205 g sample of CaCO, was dissolved in HCl and the resulting solution diluted to 250.0 mL in a volumetric fask A 25.00 mL sample of the solution required 18.75 ml. of an EDTA solution for titration the Eriochrome Black T end point. a. How many moles of CaCO, were used? b. What is the concentration of Ca (in mol/L) in the 250.0 ml. of CaCl, solution? How many moles of Ca? are contained in a 25.00 mL. sample? c. d. How many moles of EDTA are contained in the 18.75 ml used for titration? e. What is the concentration (in mol/L) of the EDTA solution? Copy this answer into postlab question #7 29

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6. A 0.3205 g sample of CaCO, was dissolved in HCl and the resulting solution di

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