下列溶液在空气中加热、蒸干、灼烧后,所得固体为原溶液中的溶质

下列溶液在空气中加热、蒸干、灼烧后,所得固体为原溶液中的溶质的是(    )

A.NaHCO3          B.KMnO4          C.FeCl3         D.NaCl

答案


解析:

NaHCO3、KMnO4灼烧分解,FeCl3溶液蒸干得Fe(OH)3,灼烧分解成氧化铁。

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