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13问答网 > 化学排水集气法量筒是空的，为什么要把导管伸到量

化学排水集气法量筒是空的，为什么要把导管伸到量

2025-03-15 14:41:20

推荐回答（1个）

回答1：

向上排空气法：所制取的气体密度比空气要轻，集气瓶口朝上，导管伸入集气瓶底部，至于气体需不需要有颜色，我记不清了。排水集气法：所制取气体不溶于水，不与水发生化学反应，集气瓶开始要充满水，倒立并浸没在水中，导管伸入集气瓶底部，进行集气。

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