6-17. A 0.3396-g sample that assayed 96.4% Na,SO4 re-quired 37.70 mL of a barium chloride solution.Reaction:Ba2+ + SO- → BaSO,(s)Calculate the analytical molarity of BaCl, in the so-lution. 6-20. A 4.476-g sample of a petroleum product was burnedin a tube furnace, and the SO, produced was col-lected in 3% H,O2. Reaction:SO-(g) + H;O, → H,SO4A 25.00-mL portion of 0.00923 M NaOH was intro-duced into the solution of H,SO,, following whichthe excess base was back-titrated with 13.33 mL of0.01007 M HCI. Calculate the parts per million ofsulfur in the sample.

The concentration of the solution is expressed in molarity. The molarity is the number of moles of…

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Calculate the analytical molarity of BaCl,

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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Concept explainers

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.

Question

6-17. A 0.3396-g sample that assayed 96.4% Na,SO4 re-
quired 37.70 mL of a barium chloride solution.
Reaction:
Ba2+ + SO- → BaSO,(s)
Calculate the analytical molarity of BaCl, in the so-
lution.

6-20. A 4.476-g sample of a petroleum product was burned
in a tube furnace, and the SO, produced was col-
lected in 3% H,O2. Reaction:
SO-(g) + H;O, → H,SO4
A 25.00-mL portion of 0.00923 M NaOH was intro-
duced into the solution of H,SO,, following which
the excess base was back-titrated with 13.33 mL of
0.01007 M HCI. Calculate the parts per million of
sulfur in the sample.

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