【題目】常溫常壓下,下列各組氣體不能共存的是( )

A.SO2與O2 B.NO2與NO

C.O2與N2 D.NO與O2

【答案】D

【解析】常溫常壓下兩種氣體不發(fā)生反應(yīng)就可共存。A項(xiàng),SO2與O2需在加熱和催化劑條件下才發(fā)生反應(yīng),常溫常壓下能共存;B項(xiàng),NO2和NO不反應(yīng)可共存;C項(xiàng),N2和O2需在放電或高溫下才反應(yīng),常溫常壓下可共存;D項(xiàng),常溫常壓下,NO與O2迅速反應(yīng)生成NO2,不能共存。

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