题干

下列说法正确的是(   )

A:SiO2是酸性氧化物,能与NaOH溶液反应

B:CO、NO、NO2都是大气污染气体,在空气中都能稳定存在

C:硫化亚铁溶于稀硝酸中的离子方程式为:FeS+2H+═Fe2++H2S↑

D:pH=1的溶液中:Fe2+、NO3﹣、SO42﹣、Na+能够大量共存

上一题 下一题 0.0难度 选择题 更新时间:2014-12-11 02:19:03

答案(点此获取答案解析)

A

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