Answer A, show all work and use correct number of sig figs. A. A water soluble sample containing an unknown amount of sulfate ion weighed 0.4892g. When treatedaccording to the procedure of this experiment, the sample produced 0.8462g barium sulfate. What is the masspercent SO42- in the sample?B. Same as Parl A, but three determinations are made:Sample 1Sample 2Sample 3mass of sample0.4892 g0.3981 g0.3429 gmass of barium sulfate0.8462 g0.6890 g0.5938 gFind the mass percent SO42- for each sample, the average percent SO42- (mean), and the average deviationfrom the mean (precision index).

Question (A) is answered as per asked.

Answered: A. A water soluble sample containing an…

Principles of Modern Chemistry

8th Edition

ISBN:9781305079113

Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Chapter11: Solutions

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Problem 65AP

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Name: Date: Section: Data Report Sheet: Analysis of an Unknown Chloride Unknown # -2 Molarity of Standard Ag(NO), 5.2167x10 M Trial I Trial II Trial III Mass of Unknown 0.237 o. 232 g g Initial Burette Reading 0.00 mL 7.90 mL mL Final Burette Reading 31.00 mL 42.00 mL mL Vol. Ag(NO3) Added 31.00 mL 34.10 mL mL Moles Ag(NO,) 1.617177y10 mol. 1,7789 v10 mol. Moles CI 1.617177x103mdl. Mass Cl 0.05741 8 0g 24.22 % 27.22% Cl in Unknown Average % Cl in unknown 25.720%
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* 00 LL CO %23 6. What volume of 0.08892 M HNO3IS required to react completely with 0.2352 g of potassium hydrogen phosphate? HNO3(aq) + K2HPO4(ag)-H3PO4(aq) + KNO3(ag) L Display Settings F4 F5 F7 F8 F10 F11 F12 2$ 4. 5. 9. E R T Y
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A. A water soluble sample containing an unknown amount of sulfate ion weighed 0.4892g. When treated according to the procedure of this experiment, the sample produced 0.8462g barium sulfate. What is the mass percent SO42- in the sample?