Description of experiment
Below follows a plain text transcript of the selected experiment.
Needed compounds:
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hydrochloric acid : HCl
perchloric acid : HClO4
Class:
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elem=Cl
Summary:
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Hydrogen chloride does not dissolve very well in concentrated perchloric acid.
Description:
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Add a few drops of concentrated hydrochloric acid (35% HCl by weight) to
concentrated perchloric acid (70% HClO4 by weight) and swirl: The liquids mix
and there is some bubbling in the liquid, similar to the formation of bubbles
in soda water. On shaking, more bubbles are formed. On gentle heating, quite
some gas escapes from the liquid.
The bubbles are gaseous HCl, the gas strongly fumes in contact with air.