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a) A 0.624 g sample consisting only of CaC₂04 and MgC₂04 was heated to 500 °C, converting the two salts into CaCO3 and MgCO3. The sample then weighed 0.483 g. a) Calculate the percentages of CaC204 and MgC204 of the sample. B) If the mixture were heated to 900 °C giving as products CaO and MgO, how much would the mixture of oxides weigh? b) The iodide in a sample that also contained chlorides was converted to iodate by treatment with an excess of bromine: 3H₂O + 3Br2 +16Br + 103 + 6H+ The unused bromine is removed by boiling and an excess of barium ions is then added to force precipitation of the iodate: Ba²+ + 2103 Ba(103) 2 In the analysis of a sample of 1.59g, 0.0538 g of barium iodate was recovered. Express the results of this analysis as a percentage of potassium iodide. c) A calcined residue containing Fe2O3 and silica weighs 0.2680 g. In the reduction of iron oxide with hydrogen, 0.0817 g of water is formed. Calculate the percentage of Fe₂O3 in the sample.

a) A 0.624 g sample consisting only of CaC₂04 and MgC₂04 was heated to 500 °C, converting the two salts into CaCO3 and MgCO3. The sample then weighed 0.483 g. a) Calculate the percentages of CaC204 and MgC204 of the sample. B) If the mixture were heated to 900 °C giving as products CaO and MgO, how much would the mixture of oxides weigh? b) The iodide in a sample that also contained chlorides was converted to iodate by treatment with an excess of bromine: 3H₂O + 3Br2 +16Br + 103 + 6H+ The unused bromine is removed by boiling and an excess of barium ions is then added to force precipitation of the iodate: Ba²+ + 2103 Ba(103) 2 In the analysis of a sample of 1.59g, 0.0538 g of barium iodate was recovered. Express the results of this analysis as a percentage of potassium iodide. c) A calcined residue containing Fe2O3 and silica weighs 0.2680 g. In the reduction of iron oxide with hydrogen, 0.0817 g of water is formed. Calculate the percentage of Fe₂O3 in the sample.

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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Show full and complete procedure HANDWRITTEN only. Please answer a) b) and c). Note they are subparts of the same question 

1. Solve the following queries related to gravimetric analysis. Make sure to show full and complete procedure. a) A 0.624 g sample consisting only of CaC₂04 and MgC₂04 was heated to 500 °C, converting the two salts into CaCO3 and MgCO3. The sample then weighed 0.483 g. a) Calculate the percentages of CaC₂O4 and MgC₂O4 of the sample. B) If the mixture were heated to 900 ºC giving as products CaO and MgO, how much would the mixture of oxides weigh? b) The iodide in a sample that also contained chlorides was converted to iodate by treatment with an excess of bromine: 3H₂O + 3Br₂ + I¯→ 6Br¯ + 103 + 6H+ The unused bromine is removed by boiling and an excess of barium ions is then added to force precipitation of the iodate: Ba²+ + 2103 > Ba(103) 2 In the analysis of a sample of 1.59g, 0.0538 g of barium iodate was recovered. Express the results of this analysis as a percentage of potassium iodide. c) A calcined residue containing Fe₂O3 and silica weighs 0.2680 g. In the reduction of iron oxide with hydrogen, 0.0817 g of water is formed. Calculate the percentage of Fe2O3 in the sample.
Transcribed Image Text:1. Solve the following queries related to gravimetric analysis. Make sure to show full and complete procedure. a) A 0.624 g sample consisting only of CaC₂04 and MgC₂04 was heated to 500 °C, converting the two salts into CaCO3 and MgCO3. The sample then weighed 0.483 g. a) Calculate the percentages of CaC₂O4 and MgC₂O4 of the sample. B) If the mixture were heated to 900 ºC giving as products CaO and MgO, how much would the mixture of oxides weigh? b) The iodide in a sample that also contained chlorides was converted to iodate by treatment with an excess of bromine: 3H₂O + 3Br₂ + I¯→ 6Br¯ + 103 + 6H+ The unused bromine is removed by boiling and an excess of barium ions is then added to force precipitation of the iodate: Ba²+ + 2103 > Ba(103) 2 In the analysis of a sample of 1.59g, 0.0538 g of barium iodate was recovered. Express the results of this analysis as a percentage of potassium iodide. c) A calcined residue containing Fe₂O3 and silica weighs 0.2680 g. In the reduction of iron oxide with hydrogen, 0.0817 g of water is formed. Calculate the percentage of Fe2O3 in the sample.
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