Solid Ba(NO3)2 is gradually dissolved in a 1.0 $\times$ 10-4 M Na2CO3 solution. At what concentration of Ba2+ will a precipitate begin to form ? (Ksp for BaCO3 = 5.1 $\times$ 10−9 )

Question

Solid Ba(NO₃)₂ is gradually dissolved in a 1.0 $\times$ 10^-4 M Na₂CO₃ solution. At what concentration of Ba²⁺ will a precipitate begin to form ?
(K_sp for BaCO₃ = 5.1 $\times$ 10⁻⁹ )

5.1 $\times$ 10^-5 M

8.1 $\times$ 10^-8 M

8.1 $\times$ 10^-7 M

4.1 $\times$ 10^-5 M

Solution

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