1. The hydrogen sulfide in a 75.0 -g sample of crude petroleum was removed by distillation and uncollected in a solution of CdCl2. The precipitated CdS was then filtered, washed, and ignited to CDSO4. Calculate the percentage of H2S in the sample if 0.117 g of CDSO4 was recovered.

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Chapter21: Chemistry Of The Main-group Elements
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1. The hydrogen sulfide in a 75.0 -g sample of crude petroleum was removed by distillation and
uncollected in a solution of CdCl2. The precipitated CdS was then filtered, washed, and ignited to
CdSO4. Calculate the percentage of H2S in the sample if 0.117 g of CdSO4 was recovered.
Transcribed Image Text:1. The hydrogen sulfide in a 75.0 -g sample of crude petroleum was removed by distillation and uncollected in a solution of CdCl2. The precipitated CdS was then filtered, washed, and ignited to CdSO4. Calculate the percentage of H2S in the sample if 0.117 g of CdSO4 was recovered.
2. A 5.000-g sample of a pesticide was decomposed with metallic sodium in alcohol, and the
liberated chloride ion was precipitated as AgCl. Express the results of this analysis in terms of
percent DDT (C14H•Cls) based on the recoverv of 0.1987 g of A¢CI.
Transcribed Image Text:2. A 5.000-g sample of a pesticide was decomposed with metallic sodium in alcohol, and the liberated chloride ion was precipitated as AgCl. Express the results of this analysis in terms of percent DDT (C14H•Cls) based on the recoverv of 0.1987 g of A¢CI.
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