Will a precipitate form when 20.0 mL of 1.8 × 10^-³ M Pb(NO₃)₂ is added to 30.0 mL of5.0 × 10^-⁴M Na₂SO₄? The K_sp of (PbSO₄)is 6.3 × 10^-⁷.Hint: Find the concentration of each ion in the insoluble compound, and use those to find Q.

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Quizplus · Accepted Answer

The ion product Q is calculated using the concentrations of Pb²⁺ and SO₄^2- after mixing. Q = [Pb²⁺][SO₄^2-] = (7.2 × 10^-4)(3.0 × 10^-4) = 2.16 × 10^-7, which is less than K_sp (6.3 × 10^-7), so no precipitate forms.

Will a Precipitate Form When 20