試題詳解

70. One beaker has 75.0 mL of a 2.00 M solution of Na₂CrO₄(aq). Another one has 125 mL of a 2.00 M solution of AgNO₃(aq). Please calculate the concentration of Ag⁺ after the two solutions are mixed together.
(A) 0.00 M
(B) 0.02 M
(C) 0.75 M
(D) 1.25 M
(E) 0.50 M