When air which contains the gases Oxygen, nitrogen, carbondioxide, water vapour and the rare gases, is passed through alkaline pyrogallol and then over quicklime, the only gases left are?
- Alkaline solutions of pyrogallol absorb oxygen efficiently.
- Quicklime have a strong chemical affinity to absorb water.
- At room temperature, Calcium oxide (CaO) will spontaneously absorb carbon dioxide from the atmosphere.
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