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【单选题】
以 0.01000 mol/L K 2 Cr 2 O 7 溶液滴定 25.00 mL Fe 2+ 溶液,消 耗 K 2 Cr 2 O 7 溶液 25.00 mL 。每毫升 Fe 2+ 溶液含铁 ( M Fe = 55.85 g/mol ) 为( )A.
0.3351 mg
B.
0.5585mg
C.
1.676mg
D.
3.351mg
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