用铁片与稀硫酸反应制取氢气是,下列的措施中,不能使氢气生成速

用铁片与稀硫酸反应制取氢气是,下列的措施中,不能使氢气生成速率加快的是

A. 加热                                  B. 不用稀硫酸,改用98﹪浓硫酸

 C.滴加少量硫酸铜溶液                   D.不用铁片,改用铁粉

答案

B

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