下列各溶液中的离子可能大量共存的是                   

下列各溶液中的离子可能大量共存的是                                                                      

       A.滴加无色酚酞后仍为无色的溶液:NaCO32KClOSO42

       B.由水电离的cOH=1014mol·L1 的溶液:CH3COOSO42NaK

       C.含有大量NO3的溶液:SO42Fe2HCl

       D.加入铝粉后产生大量氢气的溶液:NH4NaNO3ClSO42

答案

  B

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