Answer to Question #195428 in General Chemistry for Anica Tupaz

Question #195428

 A 1.000 g sample of an aluminum is dissolved and the sulfate precipitated as BaSO4. The precipitate weighed 

0.3486 g after it was washed and ignited. Assuming all the sulfate and aluminum in the sample were in the form 

of K2Al2(SO4)3 • 24 H2O, calculate the percentage of Al2O3 in the sample.



1
Expert's answer
2021-05-28T00:55:34-0400

Moles of aluminiun"=\\frac{1.000}{26.981539}=\n0.037 moles"


Moles of "BaSO_4=" "\\frac{0.3486}{233.38 }=1.49\u00d710^{-3}moles"


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