試題詳解

58. If 30 mL of 5.0 x 10^-4M Ca(NO ₃)₂ are added to 70 mL of 2.0 ✖ 10^-4 M NaF, will a precipitate occur? (K_sp of CaF₂ = 4.0 ✖ 10^-11 )
(A) No, because the ion product is greater than iTSp.
(B) Yes, because the ion product is less than XSp.
(C) No, because the ion product is less than ZSp.
(D) Not enough information is given.
(E) Yes, because the ion product is greater than Ksp.