Description of experiment
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Needed compounds:
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sodium hydroxide : NaOH
chloroform : CHCl3
thymol : C6H3 OH CH3 CH3CHCH3
Class:
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elem=C
organic
Summary:
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Thymol reacts with chloroform and/or sodium hydroxide when heated. A yellow/
green compound is formed. What is this compound?
Description:
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Add some chloroform to some solid thymol: The solid dissolves, the liquid
becomes colorless.
Add water (appr. 10 times as much as the volume of the chloroform) and add
some solid sodium hydroxide: The solid dissolves, the chloroform layer becomes
turbid and remains on the bottom, the aqueous layer remains clear.
Heat the two-layer system: The chloroform boils away. The liquid becomes
yellow with a green hue and it becomes slightly turbid. Finally, when all
chloroform is driven off, the yellow/green liquid remains.