O What is the pM in a titration of 16.0 mL of 0.05 M Ca2+ with 0.05 M EDTA if the titration buffered to pH 10.00 and 16.0 mL of the EDTA has been added?
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- In the titration of 50 mL 0.02 M Sr² with 0.02 M EDTA in a buffered medium at titrated pH 11, calculate the psr value for the addition of 10 mL EDTA02) Consider the titration of 20.00mL of a Ca2+0.0250mol/L solution with 0.0500mol/L EDTA. The Ca2+ solution is initially buffered at pH 10.00 (α4= 0.35 at pH 10). Given: Kf= 5.0 x 10-10 a)Why was the solution buffered? b)Calculate pCa values at the following points: before the addition of titrant and after the following additions of 5.00 mL, 10.00 mL and 12.00 mL of the titrant.Calculate the pSr value for 10 mL of EDTA in the titration of 50 mL of 0.02 M Sr2 + in an environment buffered at pH 11 with a titre of 0.02 M EDTA. A. 1.89B. 3.78C. 7.56D. 12.11
- DETERMINATION OF WATER HARDNESS BY EDTA TITRATION 1. Why is it needed to add a pH 10 buffer to the sample during EDTA titration? 2. What is EDTA and why can it be used to determine the hardness of water?Calculate the PCa vs. EDTA titration curve for 50.0 mL of 0.0060 M Ca2+ being titrated with 0.0150 M EDTA in a solution buffered to a constant pH of 10.00. After the addition of 0.00 mL After the addition of 26.0 mLTitration of 25.0 mL of a 0.0500 M Zn2+ solution with 0.0550 M EDTA in a solution buffered at pH 8. Assume that the temperature is 25 oC and that the formation constant for Zn2+ is 3.13 x 1016 at this temperature. What is the conditional formation constant for Zn at this pH?
- In the titration of MgSO4.nH2O (2g per litre) against a 0.01 M solution of the disodium salt of ethylenediamine tetraacetic acid (EDTA) the titres obtained were as follows ; titre 1: start - 0.7 ml and end - 13.3 ml (12.6ml) titre 2: start - 13.3 ml and end 25.7 ml (12.4ml) Q. Calculate the value of n4.50 mL of 0.1 M Ca2+ ion was titrated at pH 10 with 0.1 M EDTA. What will be the concentration of Ca2+ ions in the solution when 25 mL, 50 mL and 75 mL EDTA is added(a4 = 0.35, Kf = 5.0x1010)?Find the pH during the titration of 20.00 mL of 0.1000 Mtri-ethylamine, (CH₃CH₂)₃N (K(b)=5.2X10⁻⁴), with 0.1000 M HCl solution after the following additions of titrant:(a) 0 mL(b) 10.00 mL(c) 15.00 mL(d) 19.00 mL(e) 19.95 mL(f ) 20.00 mL(g) 20.05 mL(h) 25.00 mL
- Determine the molar concentration of an EDTA solution of which 26.44 mL were required to titrate a sample containing 287.4 mg of primary standard CaCO3.In order to adjust the EDTA solution, 10 mL of 0.01M Ca + 2 sample was taken and 10 mL of pH 10 buffer was added on it and it was completed to 100 mL. Then, two drops of EBT indicator were added and titrated with EDTA. Since the consumption is 13 mL, what is the concentration of EDTA solution in terms of molarity?The titration of Zn+2 and EDTA is carried out in the same manner as the Mg+2-EDTA titration. In this case, the ammonia in the EDTA buffer serves an additional purpose, what is it?