6) A 0.1803 g sample containing only Pb,O, and inert matter gives 0.2378 gof PbSO4. Calculate the percent of Pb in the sample?A) 9.0 %B) 90.1 %C) 18.0 %D) 22.5 %7) The precipitation titration is more successful:A) As the solubility product is greaterB) As the solubility product equals the pH of the solutionC) AS the solubility product is smallerD) As the solubility product equals the pk of the reaction8) For a buffer solution made by mixing equal volumes of weak acid and itssalt of the same concentrationA) pH is less than pk,B) pH-pk, = 0C) pH is greater than pk,D) pH + pk, = 09) If the pH range of an acid-base indicator is between 2.3 and 4.3 then theK, of this indicator is********A) 4.3B) 5.0 x 10C) 1.3 x 105D) 3.310) EDTA complexes with metals are very stable because....A) EDTA is a hexadentate agentB) EDTA is a hexadentate chelating ligandC) EDTA is freely soluble in waterD) EDTA is an octadentate chelating ligand

According to guidelines here we solve first question, i.e., question number 6, please ask other…

Answered: 6) A 0.1803 g sample containing only…

6) A 0.1803 g sample containing only Pb,O, and inert matter gives 0.2378 g of PbSO. Calculate the percent of Pb in the sample? A) 9.0 % B) 90.1 % C) 18.0 % D) 22.5%

Chemistry

9th Edition

ISBN:9781133611097

Author:Steven S. Zumdahl

Publisher:Steven S. Zumdahl

Chapter15: Acid-base Equilibria

Section: Chapter Questions

Problem 7RQ: Sketch the titration curve for a weak acid titrated by a strong base. When performing calculations...

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Question

6) A 0.1803 g sample containing only Pb,O, and inert matter gives 0.2378 g
of PbSO4. Calculate the percent of Pb in the sample?
A) 9.0 %
B) 90.1 %
C) 18.0 %
D) 22.5 %
7) The precipitation titration is more successful:
A) As the solubility product is greater
B) As the solubility product equals the pH of the solution
C) AS the solubility product is smaller
D) As the solubility product equals the pk of the reaction
8) For a buffer solution made by mixing equal volumes of weak acid and its
salt of the same concentration
A) pH is less than pk,
B) pH-pk, = 0
C) pH is greater than pk,
D) pH + pk, = 0
9) If the pH range of an acid-base indicator is between 2.3 and 4.3 then the
K, of this indicator is
********
A) 4.3
B) 5.0 x 10
C) 1.3 x 105
D) 3.3
10) EDTA complexes with metals are very stable because....
A) EDTA is a hexadentate agent
B) EDTA is a hexadentate chelating ligand
C) EDTA is freely soluble in water
D) EDTA is an octadentate chelating ligand

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