1. A 0.9882 gram sample of iron ore is dissolved, the iron reduced to Fe2+, and the solution was titrated with 36.40 mL of 0.02065 M KMnO4 in acid solution.(a) Write the titration reaction. (b) Calculate the %FeO (M.M. = 71.85) in the sample. 2. A sample of primary standard grade K2Cr2O7 (MM = 294.20) weighing 0.2153 g is dissolved, the solution acidified and excess KI added. The liberated I2 requires 44.86 mL of the Na2S2O3 for titration.(a) Write the titration reaction. (b) Calculate the molarity of the titrant solution. Box the final answer.

#1: Given the mass of the iron ore sample = 0.9882 g Volume of 0.02065 M KMnO4 used for the…

Answered: 1. A 0.9882 gram sample of iron ore is…

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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1. A 0.9882 gram sample of iron ore is dissolved, the iron reduced to Fe²⁺, and the solution was titrated with 36.40 mL of 0.02065 M KMnO₄ in acid solution.

(a) Write the titration reaction.

(b) Calculate the %FeO (M.M. = 71.85) in the sample.

2. A sample of primary standard grade K₂Cr₂O₇ (MM = 294.20) weighing 0.2153 g is dissolved, the solution acidified and excess KI added. The liberated I₂ requires 44.86 mL of the Na₂S₂O₃ for titration.

(a) Write the titration reaction.

(b) Calculate the molarity of the titrant solution.

Box the final answer.

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