Answer to Question #297816 in General Chemistry for Melo

Question

Which of the following situations will produce a precipitate?

A. A 500 mL solution containing 9.0 × 10^-4 mol Sr²⁺ and 1.0 × 10^-4 mol HPO₄^2- (K_sp for the possible SrHPO₄ = 1.2 × 10^-7).

B. A solution containing 1.2 × 10^-3 M Ba²⁺ and 1.2 × 10^-2 M F^- (K_sp for the possible BaF₂ = 1.8 × 10^-7).

C. A solution containing 0.0030 M Ca²⁺ and 0.025 M CrO₄^2- (K_sp for the possible CaCrO₄ = 7.1 × 10^-4).

D. A solution containing 0.095 M Tl⁺ (thallium(I)) and 0.0020 M Cl^- (K_sp for the possible TlCl = 1.9 × 10^-4).

Answer 1

B. A solution containing 1.2 × 10-3 M Ba2+ and 1.2 × 10-2 M F- (Ksp for the possible BaF2 = 1.8 × 10-7).