A 0.5118 g sample of CaCo3 is dissolved in 6 M HCl, and the resulting solution is diluted to 250 ml in a volumetric flask.
a. How many moles of CaCo3 are in the sample? (formula mass=100.1)
b. What is the molarity of the Ca^2+ ion in the 250 ml of solution?
c. How many moles of Ca^2+ ion are in a 25.00ml aliquot of the solution?
Part 2.
25.00ml aliquots of the solution from problem 1 are titrated with EDTA to the calmagite end-point. An aliquot ifound to require 28.55 ml of the EDTA before the solution becomes sky blue.
a. How many moles of EDTA are there in the volume that is used?
b. What is the molarity of the EDTA solution?