A solution contains 0.10 M Sr(NO₂)₂ and 0.20 M Bi(NO3). When solid Na AsO is added to the solution a precipitate forms. What concentration of AsO ³ maintains maximum separation of Sr²+ and Bi³+? 3- 4 Ksp of Sr₂(ASO₂)₂ = 4.29 x 10-1⁹ and BIASO = 4.43 x 10-1⁰

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