A 0.5152 g solid sample containing a mixture of LaCl, (molar mass = 245.26 g/mol) and Ce(NO,), (molar mass = 326.13 g/mol) was dissolved in water. The solution was titrated with KIO,, producing the precipitates La(IO,), and Ce(IO,)ą. For the complete titration of both La³+ and Ce³+, 42.00 mL of 0.1283 M KIO, was required. Calculate the mass fraction of La and Ce in the sample.

A 0.5152 g solid sample containing a mixture of LaCl, (molar mass = 245.26 g/mol) and Ce(NO,), (molar mass = 326.13 g/mol) was dissolved in water. The solution was titrated with KIO,, producing the precipitates La(IO,), and Ce(IO,)ą. For the complete titration of both La³+ and Ce³+, 42.00 mL of 0.1283 M KIO, was required. Calculate the mass fraction of La and Ce in the sample.

Chemistry by OpenStax (2015-05-04)

1st Edition

ISBN:9781938168390

Author:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser

Publisher:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser

Chapter4: Stoichiometry Of Chemical Reactions

Section: Chapter Questions

Problem 91E: A sample of solid calcium hydroxide, Ca(OH)2, is allowed to stand in water until a saturated...

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