除去MgO中的Al2O3可选用的试剂是( )A.NaOH溶液 B.硝

除去MgO中的Al₂O₃可选用的试剂是( )

A.NaOH溶液 B.硝酸 C.浓硫酸 D.稀盐酸

答案

解析：因Al₂O₃为两性氧化物，可与强碱反应，而氧化镁不与强碱反应，因此加入过量氢氧化钠即可除去MgO中的Al₂O₃。

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除去MgO中的Al2O3可选用的试剂是( )A.NaOH溶液 B.硝

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