17.将5.1g镁、铝合金投入到500mL 2mol/L的盐酸中,金属完全溶解,再加入4mol/L的NaOH溶液,若要生成的沉淀最多,则应加入的NaOH溶液体积为
A.200 mL B.250 mL C.425 mL D.560 mL
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