A chemistry student prepares an aqueous, saturated solution of B a S O 4 at 25 ∘ C . The K s p of B a S O 4 is 1.1 × 10 − 10 . The equilibrium concentrations of B a + 2 and S O − 2 4 are 1.05 × 10 − 5 M . The student adds a few drops of 1.0 M N a 2 S O 4 to the saturated solution at 25 ∘ C . Which of the following accurately predicts the molar solubility of B a S O 4 and the effect that adding N a 2 S O 4 has on the solution?