Determine the %w/w of Na2CO3 in a 2.7518 g sample that was titrated by 41.92 mL of 0.6108 M HCl. Na2CO3 mw = 105.99 g/mol

Chemistry: Principles and Practice
3rd Edition
ISBN:9780534420123
Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Chapter4: Chemical Reactions In Solution
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Problem 4.10QE: Draw the flow diagram for a calculation that illustrates how to use a titration to determine the...
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Determine the %w/w of Na2CO3 in a 2.7518 g sample that was titrated by 41.92 mL of 0.6108 M HCl. Na2CO3 mw = 105.99 g/mol

A mineral was collected and weighed to be 15.001 g. The CrO4 content was determined by using 35.77 mL of a 0.9887 M HCl solution. Determine the %w/w of Cr2O3 content of the sample.
Cr2O3 = 151.99 g/mol
2 Na2CrO4 + 2 HCl→Na2Cr2O7 + 2 NaCl + H2O

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