5.750 ml of a soil sample was dissolved in water up to the volume of 50 ml. An aliquot of 10 ml of the same was transferred to an Erlenmeyer flask and added 10 ml of KOH 1 mol L-1 and 2. Drops of Calcein and the solution that had a yellow coloration was titled to a slightly orange color consuming a volume of 3.9 mL of EDT A 0.0125 mol/L. On the basis of these data reply:
A) What calcium content in the soil sample in mol/dm^-3
B) The bottom of the Erlenmeyer flask appears a fine precipitate, what would be the composition of this precipitate?
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Check over your post. I'm wondering if that was 2 drops Mg ion you added before titration with EDTA.
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