挑战习题
1/5单选题
难度:

1.下列关于实验室制取氯气的操作正确的是①药匙向烧瓶中加入浓硫酸,再向分液漏斗中装入MnO2粉末;②用酒精灯直接加热烧瓶;③需检查装置的气密性;④多余氯气用NaOH溶液吸收;⑤可用装有碱石灰的干燥试管干燥氯气。
A ①④⑤
B ③④
C②④⑤
D ①②③
提示1:
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提示2:
54On55O26ZyA6KaB5Z6r55+z5qOJ572R44CC
提示3:
56Kx55+z54Gw5LiN6IO955So5p2l5bmy54el6YW45oCn5rCU5L2T44CC
正确答案:Qg==
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