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稱取氯化鋇樣品0.4801克,經重量法分析得BaSO沉淀0.4578克，試計算樣品中氯化鋇的百分含量。(注:=208.24;=217.39)

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正確答案：

∵ BaCL +H SO =BaSO +2HCL∴GBaCL =MBacl /MBaSO ×0.4578=0.4385 克y=0.4385/0.4801 ×100%=91.34%

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