Answered: 3. A solid sample containing some Fe2*…

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

Chapter4: Types Of Chemical Reactions And Solution Stoichiometry

Section: Chapter Questions

Problem 158IP: The vanadium in a sample of ore is converted to VO2+. The VO2+ ion is subsequently titrated with...

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A solid sample containing some Fe^2+ ion weighs 1.923 g. It requires 36.44 mL 0.0244 M KMnO4 to titrate the Fe^2+ in the dissolved sample to a pink end point. a) How many moles MnO4 ion are required? b) How many moles Fe^2+ are there in the sample? c) How many grams of iron are there in the sample? d) What is the percentage of Fe in the sample?

reaction in Question 1?
3. A solid sample containing some Fe2* ion weighs 1.923 g. It requires 36.44 mL
0.0244 M KMnO4 to titrate the Fe2* in the dissolved sample to a pink end point.
a. How many moles MnO4 ion are required?
b. How many moles Fe2* are there in the sample?
C. How many grams of iron are there in the sample?
d. What is the percentage of Fe in the sample?
Lab Activities:
Go over the sample calculations and prelab questions with your lab instructor
Complete lab and fill in data sheet for the Standardization of Potassium
Permanganate. The next data sheet, Percent Iron in Unknown Sample will be
completed the following lab period.
1|Pag

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