Problem- what is the solubility of pbso4 in water at 25c if, Ask an Expert

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Problem- What is the solubility of PbSO4 in water at 25C if the solution already contains 0.25M Na2SO4? (Ksp for PbSO4 is 2.5 x 10^-8)

Also please include the solubility before the Na2SO4 is added.

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