下列鉴别物质的方法中,切实可行的是(    ) A.用酚酞溶液鉴别NaCl

下列鉴别物质的方法中,切实可行的是(    )

A.用酚酞溶液鉴别NaCl溶液和盐酸

B.用燃着的木条鉴别CO2N2

C.用石蕊溶液鉴别稀盐酸和稀硫酸

D.用水鉴别NaOHCaCO3固体

答案

D

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