0.2 g of iron wire is dissolved in acid and then reduction is done using ............... solution. The Fe2+ ion in the obtained solution is titrated to the 0.1 M Ce4+ standard solution. Which of the following is not suitable for the blank above? A. Walden reductant B. Sodium bismuthate C. Tin(II) chloride D. Jones reductive

0.2 g of iron wire is dissolved in acid and then reduction is done using ............... solution. The Fe2+ ion in the obtained solution is titrated to the 0.1 M Ce4+ standard solution. Which of the following is not suitable for the blank above? A. Walden reductant B. Sodium bismuthate C. Tin(II) chloride D. Jones reductive

Chemical Principles in the Laboratory

11th Edition

ISBN:9781305264434

Author:Emil Slowinski, Wayne C. Wolsey, Robert Rossi

Publisher:Emil Slowinski, Wayne C. Wolsey, Robert Rossi

Chapter28: Determination Of The Hardness Of Water

Section: Chapter Questions

Problem 3ASA: A 100-mL sample of hard water is titrated with the EDTA solution in Problem 2. The same amount of...

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A 100-mL sample of hard water is titrated with the EDTA solution in Problem 2. The same amount of Mg2 is added as previously, and the volume of EDTA required is 31.84 mL. a. What volume of EDTA is used in titrating the Ca2 in the hard water? _____________mL b. How many moles of EDTA are there in that volume? _____________ moles c. How many moles of Ca2 are there in the 100 mL of water? _____________ moles d. If the Ca2 comes from CaCO3, how many moles of CaCO3 are there in one liter of the water? How many grams of CaCO3 are present per liter of the water? _____________ mol / L _____________ g / L e. If 1 ppm CaCO3 = 1 mg per liter, what is the water hardness in ppm CaCO3? _____________ ppm CaCO3
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