化学实验中常将溶液或试剂进行酸化,下列酸化处理的措施正确的是

化学实验中常将溶液或试剂进行酸化,下列酸化处理的措施正确的是  

A.定性检验SO32—,将BaCl2溶液用HNO3酸化

B.为提高高锰酸钾溶液的氧化能力,用盐酸将高锰酸钾溶液酸化

C.检验溶液中是否含有Fe2+时,用硝酸酸化

D.检验溶液中是否含有SO42—时,在无其他阳离子干扰的条件下,先用盐酸酸化,所得溶液再加BaCl2溶液

答案

D

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