A river water sample was titrated against 0.0250 M EDTA to test its hardness. of 0.0250 M EDTA. A 50.00-mL aliquot, prepared with NaOH, was titrated with 14.53 mL of the same EDTA titrant. Another 50.00 mL aliquot was prepared and buffered to pH 10.0, it required 23.55 mL Calculate the following: a. Total hardness (ppm CaCO3). b. Calcium hardness (ppm CaCO3). c. Magnesium hardness (ppm MgCO3).'

A river water sample was titrated against 0.0250 M EDTA to test its hardness. of 0.0250 M EDTA. A 50.00-mL aliquot, prepared with NaOH, was titrated with 14.53 mL of the same EDTA titrant. Another 50.00 mL aliquot was prepared and buffered to pH 10.0, it required 23.55 mL Calculate the following: a. Total hardness (ppm CaCO3). b. Calcium hardness (ppm CaCO3). c. Magnesium hardness (ppm MgCO3).'

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Similar questions

Suppose titration of 100.00 mL mixture of 0.0500 M in Br + 0.08 M CI with 0.4000 M AgNO3. What is pAg at the second end point? Lütfen birini seçin: a. 9.62 b. 11.43 C. 12.41 d. 4.87 e. 0000 8 8.13
Titration of the I2 produced from 0.2242 g of primary standard KIO3 required 34.95 mL of sodium thiosulfate (Na2S2O3). 103 + 51- + 6H* 312 + 3H20 12 + 2S2032- 21- S4062- + MM KIO3: 214.00 MM Na2S203: 158.11 Calculate the molar concentration of Na2S203.
1. Calcium is determined in serum by microtitration with EDTA. A 150 ml sample is treated with few drops of 2M KOH, calmagite indicator is added and the titration is performed with 0.00125M EDTA, using a microburet. A 0.205mL of EDTA is required for titration. What is the level of Ca in the serum in a. mg/dL b. mg/L
None
Calculate the pl after 50 mL of 0.1 M Nal is titrated with 10.0 mL 0.2 M AgNO, solution? Given (AgI has Ksp= 8.3X10-17). 1. 00.05 2. O1.30 3. O1.00 4. 00.70
Standard oxylate solution used to standardize KMnO4 was prepared by dissolving 3.299g of Na2C2O4 in 1.000L of water containing H2SO4. add 25mL aliquot of the Na2C2O4 solution required 28.39 mL of KMnO4 for titration. A blank titration of 25mL of water containing H2SO4 required 0.03 mL of KMnO4. what is the molarity of the KMnO4 solution? 5C2O42-+2MnO4-+16H+ → 10CO2+2Mn2++8H2O
A potentiometric titration of acetic acid and 0.100 M NaOH produced the 2nd derivative curve below. Identify the volume of NaOH used to neutralize the acetic acid.
Concerning EDTA titrations, which of the following is incorrect? 1. OEDTA forms 1:1 complexes with metal ions. 2. OThe most widely used indicators are murexide and Eriochrome Black T. 3. Oln presence of NaOH, EDTA reacts only with Mg2 ions, using murexide indicator. 4. OThe water hardness is usually expressed as CACO3 mg /L water. 5. OEDTA solution was standardized using Zinc Sulfate.
A 50.00 mL aliquot of city drinking water was treated with a small amount of ammonia –- ammonium chloride buffer to bring the pH to 10. After the addition of EBT indicator the solution required 10.00 mL of 8.000 x 10-3 M EDTA for titration. Calculate the hardness in terms of parts per million calcium carbonate (100.0869 g/mol). O 80 160 ppm 320
A 100mL solution of 0.1M glycine at pH 1.27 was titrated with 2M NaOH solution.titration graph
i forgot how to do this pls help soon
SO3 + H20 by titration with permanganate in acidic pH: peroxide was diluted to 25 ml and analyzed The sample required 84.2 mL of 0.0175 M permanganate to reach the concentration of hydrogen peroxide in the original sample? 04+H202 →02 + Mn2+ NT COPY NRSITY What is the GE