下列物质分离方法错误的是(    )   A、除去CO2中混有少量的CO:

下列物质分离方法错误的是(   

  A、除去CO2中混有少量的CO:导出点燃

  B、粗盐提纯的步骤:溶解→过滤→蒸发→冷却结晶→过滤

  C、除去H2中混有的HCl:将气体通过装有NaOH溶液的洗气瓶

  D、除去铜粉中混有的CuO:用足量的稀硫酸浸泡后过滤、洗涤

答案

A

 

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