常温下,下列各组离子一定能在指定溶液中大量共存的是( ) A. c(OH-

常温下,下列各组离子一定能在指定溶液中大量共存的是(  )

A. c(OH)/c(H)1012的溶液中:NHCu2NOSO

B. 滴加KSCN溶液显红色的溶液中:NHKClI

C. 0.1 mol·L1NaHCO3溶液中:Fe3KClSO

D. 水电离产生的c(OH)1012 mol·L1的溶液中:NaAl3ClNO

答案

A

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