試題詳解

16. Consider the following solutions: 0.010 m Na₃PO₄ in water; 0.020 m CaBr₂ in water; 0.020 m KCl; 0.020 m HF in water (HF is a weak acid). Assuming complete dissociation of the soluble salts, which salt dissolved in water would have the highest vapor pressure at 28℃?
(A) 0.010 m Na₃PO₄
(B) 0.020 m CaBr₂
(C)0.020 m KCl
(D) 0.020 m HF
(E)They all have the same vapor pressure