Q3/ Calcium in a 2.00 g sample is determined by precipitating Ca2C2O4, dissolving this in acid, and titrating the oxalate with 0.0200M KMNO4. What percent of CaO is in the sample if 35.6 mL KMNO4 is required for titration? (The reaction is 5H,C,O4 +2MnO4 +6H* → 10 CO2 +2MN2+ +8H2O).

Q3/ Calcium in a 2.00 g sample is determined by precipitating Ca2C2O4, dissolving this in acid, and titrating the oxalate with 0.0200M KMNO4. What percent of CaO is in the sample if 35.6 mL KMNO4 is required for titration? (The reaction is 5H,C,O4 +2MnO4 +6H* → 10 CO2 +2MN2+ +8H2O).

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

Chapter19: Transition Metals And Coordination Chemistry

Section: Chapter Questions

Problem 11E: Iron (II) can be oxidized to iron (III) by dichromate ion, which is reduced to chromium (III) in...

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Q3/ Calcium in a 2.00 g sample is determined by precipitating Ca2C2O4,
dissolving this in acid, and titrating the oxalate with 0.0200M KMNO4. What
percent of CaO is in the sample if 35.6 mL KMNO4 is required for titration?
(The reaction is 5H,C¿O4 +2MnO4 +6H* → 10 CO2 +2MN2+ +8H2O).

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