23. To a solution containing 1 mole of HNO3 and 1 mole of H2SO4 gradually add iron powder to excess. The relationship between the amount of metal cations a and b in the solution and the amount of iron powder added is shown in the following figure (given that NO is the sole product upon reduction of dilute nitric acid). Which of the following statements is incorrect?
(A)a represents Fe3+
(B)n1 = 0.75
(C)at P,n(Fe2+) = 0.5625 mol
(D)n3 = 1.125
(E)If copper powder is added to the solution at P, up to 14.4 g of copper powder can be dissolved.

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統計: A(0), B(0), C(0), D(1), E(0) #3091941

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