取1L0.5M BaCl2(aq)與1L0.2M之K2CrO4(aq)混合,當BaCrO4(aq完全沉澱後,下列敘述何者正確?
(A)BaCrO4(aq沉澱量約為0.1mol
(B)﹝Ba2+﹞約為0.15M
(C)﹝K+﹞約為0.1M
(D)﹝CrO4 2-﹞約為0.1M
(E)﹝Cl-﹞約為0.1M