2. Calculate the potential of the copper electrode immersed in a. 0.0440 M Cu(NO3)2 b. 0.0750 M in NaCI and sat'd with CuCı 3. Titration of 0.1756 g primary standard Na;C204 required 32.04 mL of a potassium permanganate solution. Calculate the molar concentration of KMNO4 in this solution. 4. a. Calculate the E° for the process AgIO:(s) + e° + Ag(s) + 103 b. Use the shorthand notation to describe the cell consisting of a saturated calomel reference electrode and a silver indicator electrode that could be used to measure plO3. c. Develop an equation that relates the potential of the cell in (b) to plO3. d. Calculate plo, if the cell in (b) has a potential of 0.294V. 5. A 0.1278-g sample of primary standard Na;C2O4 required exactly 60.04 mL of permanganate solution to reach the end point. What is the molarity of the KMNO4 reagent?

2. Calculate the potential of the copper electrode immersed in a. 0.0440 M Cu(NO3)2 b. 0.0750 M in NaCI and sat'd with CuCı 3. Titration of 0.1756 g primary standard Na;C204 required 32.04 mL of a potassium permanganate solution. Calculate the molar concentration of KMNO4 in this solution. 4. a. Calculate the E° for the process AgIO:(s) + e° + Ag(s) + 103 b. Use the shorthand notation to describe the cell consisting of a saturated calomel reference electrode and a silver indicator electrode that could be used to measure plO3. c. Develop an equation that relates the potential of the cell in (b) to plO3. d. Calculate plo, if the cell in (b) has a potential of 0.294V. 5. A 0.1278-g sample of primary standard Na;C2O4 required exactly 60.04 mL of permanganate solution to reach the end point. What is the molarity of the KMNO4 reagent?

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...

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Concept explainers

Precipitation Titration

Precipitation analysis is used to analyze drugs, and to measure the salt content in food and beverages. It is an important concept from the examination point of view many practical questions are asked on the topic. This topic is significant in the professional exams for both undergraduate and graduate courses, especially for

Question

answer 2, 3, 4, 5, 6, and 7

1. Balance the following net reactions and identify the oxidizing agent and the reducing agent for
each.
a. Mnos + VO2* → Mn2* + V(OH)a*
b. HPO, + MnO. + OH" > PO,* + MnO2
2. Calculate the potential of the copper electrode immersed in
a. 0.0440 M Cu(NO3)2
b. 0.0750 M in NaCl and sať'd with CuCI
3. Titration of 0.1756 g primary standard Na:C204 required 32.04 ml of a potassium permanganate
solution. Calculate the molar concentration of KMNO4 in this solution.
4. a. Calculate the E° for the process AglO:(s) + e+ Ag(s) + 103
b. Use the shorthand notation to describe the cell consisting of a saturated calomel reference
electrode and a silver indicator electrode that could be used to measure pl03.
c. Develop an equation that relates the potential of the cell in (b) to plO3.
d. Calculate plo, if the cell in (b) has a potential of 0.294V.
5. A 0.1278-g sample of primary standard NazC204 required exactly 60.04 ml of permanganate
solution to reach the end point. What is the molarity of the KMNO4 reagent?
6. A 50.00 ml sample containing La* was added with sodium oxalate to precipitate La:(C204)3, which
was washed, dissolved in dilute H;SOs, and titrated with 18.09 mL of the standard KMNO4 solution
(in #5). Calculate the molarity of La* in the unknown sample.
7. The amount of hydrogen peroxide (H,O2) in a sample of hair bleach was determined by titration
with a standard KMNO4 solution. What was the mass percent of hydrogen peroxide in hair bleach
sample, if 27.6 g of hair bleach required 86.4 ml of 0.105M KMNO4 to reach the endpoint of
titration?

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