5 g sample of CuSO4.5H2O was dissolved in water. Ba Cl2 solution was mixed in excess to this solution. The precipitate BaSO4 obtained was washed and dried, it weighed 4.66 g. What is the % of (SO4)2- by weight in the sample?
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Ba Cl2 solution was mixed in excess to this solution. ... The precipitate BaSO4 obtained was washed and dried, it weighed 4.66 g.
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