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The aluminum in a 1.200-g sample of impure ammonium aluminum sulfate was precipitated with aqueous ammonia as the hydrous Al₂O3 xH₂O. The precipitate was filtered and ignited at 1000°C to give anhydrous Al₂O3 (101.96 g/mol) which weighed 0.2001 g. Express the result of this analysis in terms of (a) % NH₂Al(SO4)₂ (237.15 g/mol); (b) % Al₂O3; (c) % Al (26.98 g/mol).

The aluminum in a 1.200-g sample of impure ammonium aluminum sulfate was precipitated with aqueous ammonia as the hydrous Al₂O3 xH₂O. The precipitate was filtered and ignited at 1000°C to give anhydrous Al₂O3 (101.96 g/mol) which weighed 0.2001 g. Express the result of this analysis in terms of (a) % NH₂Al(SO4)₂ (237.15 g/mol); (b) % Al₂O3; (c) % Al (26.98 g/mol).

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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3. The aluminum in a 1.200-g sample of impure ammonium aluminum sulfate was precipitated with aqueous ammonia as the hydrous Al₂O3 xH₂O. The precipitate was filtered and ignited at 1000°C to give anhydrous Al2O3 (101.96 g/mol) which weighed 0.2001 g. Express the result of this analysis in terms of (a) % NH4Al(SO4)₂ (237.15 g/mol); (b) % Al₂O3; (c) % Al (26.98 g/mol).
Transcribed Image Text:3. The aluminum in a 1.200-g sample of impure ammonium aluminum sulfate was precipitated with aqueous ammonia as the hydrous Al₂O3 xH₂O. The precipitate was filtered and ignited at 1000°C to give anhydrous Al2O3 (101.96 g/mol) which weighed 0.2001 g. Express the result of this analysis in terms of (a) % NH4Al(SO4)₂ (237.15 g/mol); (b) % Al₂O3; (c) % Al (26.98 g/mol).
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