Ten dietary iron tablets with a total mass of 11.066 gwere ground and mixed thoroughly. Then 2.998 g ofthe powder were dissolved in HNO3 and heated toconvert all iron to Fe3+. Addition of NH3 causedonquantitative precipitation of F203.XH2O, which wasignited to give 0.264 g of Fe2O3 (FM 159.69).a.State the method of analysis.Fib.State the rule of NH3 in this analysis.What is the average mass of FeSO4.7H20 (FM278.01) in each tablet?С.show steps of yourcalculations)

Given: 10 dietary tablets Mass of 10 dietary tablets = 11.066 g Now, 2.998 g of powdered tablets…

Ten dietary iron tablets with a total mass of 11.066 g were ground and mixed thoroughly. Then 2.998 g of the powder were dissolved in HNO3 and heated to convert all iron to Fe3+. Addition of NH3 caused quantitative precipitation of F203.XH2O, which was

Ten dietary iron tablets with a total mass of 11.066 g were ground and mixed thoroughly. Then 2.998 g of the powder were dissolved in HNO3 and heated to convert all iron to Fe3+. Addition of NH3 caused quantitative precipitation of F203.XH2O, which was

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter17: Complexation And Precipitation Reactions And Titrations

Section: Chapter Questions

Problem 17.34QAP

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Question

Ten dietary iron tablets with a total mass of 11.066 g
were ground and mixed thoroughly. Then 2.998 g of
the powder were dissolved in HNO3 and heated to
convert all iron to Fe3+. Addition of NH3 caused
on
quantitative precipitation of F203.XH2O, which was
ignited to give 0.264 g of Fe2O3 (FM 159.69).
a.
State the method of analysis.
Fi
b.
State the rule of NH3 in this analysis.
What is the average mass of FeSO4.7H20 (FM
278.01) in each tablet?
С.
show steps of your
calculations)

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