A Solution Contains Ba²⁺ (1

Multiple Choice

A solution contains Ba²⁺ (1.0 × 10^-3 M) , Ca²⁺ (1.0 × 10^-3 M) and K⁺ (1.0 × 10^-3 M) . Drops of a 5.0 × 10^-1 M solution of NaF were added through a microburet until the [F^-] in the solution mix reached 1.5 × 10^-3 M. Should a precipitate form? If so, what is the precipitate? The K_sp values are BaF₂: 1.0 × 10^-6, CaF₂: 5.3 × 10^-9. (Neglect the slight change in volume resulting from the added NaF solution.)

A) a precipitate consisting of BaF₂ only should form
B) a precipitate consisting of CaF₂ and KF should form
C) a precipitate consisting of BaF₂ and CaF₂ should form
D) a precipitate consisting of CaF₂ only should form
E) No precipitate should form.