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Geography, 05.06.2021 15:20 pipo5699

0.5927-g sample was dissolved, and the Ca2+ and Ba2+ ions present were precipitated as BaC2O4

.H2O and

CaC2O4

.H2O. The oxalates were then heated in a thermogravimetric apparatus leaving a residue that weighed

0.5127 g in the range of 320°C–400°C and 0.4362 g in the range of 580°C–620°C. Calculate the percentage Ca

and percentage Ba in the sample.

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0.5927-g sample was dissolved, and the Ca2+ and Ba2+ ions present were precipitated as BaC2O4
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