Six iron tablets containing FESO4-7H,0 were dissolved in 100-ml of 0.1 M HNO; with gentle heating. All of the Fe- is converted to Fe by thestrong oxidizıng conditions. After the solution had cooled to room temperature 2.5-ml of 35wt% NH4OH was added. The precipitate Fe;O3-xH,Othat was filtered weighed 0.345 g. Thermogravimetric analysis of the crude product showed a 10.5% weight loss below 150 CHow much iron was in each of the tablets? Report the average mg-Fepertablet?

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Answered: Six iron tablets containing FESO-7H,0…

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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If a 25.00 ml aliquot of a solution containing sulfide ions was added to 25.00 ml of 0.0108 M Cu2+ solution. The CuS precipitate was washed and collected. The pH of the combined filtrate and washings was then adjusted by the addition of ammonia and the solution was titrated with 0.01453 M EDTA, using a suitable indicator. The endpoint volume was found to be 12.12ml. Find the molarity of the sulfide in the sample solution.

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