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 (HFis a weak acid). Assuming complete dissociation of the soluble salts, which salt dissolved in water would have the highestvapor 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