9. Which of the following solution will become strong electrolyte when 1 mole of the compound is dissolved in 1 L water?
(A) AgCl
(B) AgNO₃
(C) PbCl₂
(D) PbSO₄
(E) Hg₂Cl₂

考題觀念本題主要測驗三個核心觀念： ...