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Question
Why is it necessary to take extra precautions for the safe storage of chloroform and what are the precautions?
Short Answer
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Solution
It is necessary to take extra precautions when storing chloroform because it slowly reacts with oxygen and sunlight to form highly toxic phosgene gas.
Reaction:
\[\ce{2CHCl3 + O2 -> 2COCl2 + 2HCl}\]
Precautions for safe storage:
- Chloroform should be stored in dark-colored airtight bottles to prevent exposure to sunlight and air.
- A small amount of ethanol is added to chloroform because ethanol destroys any phosgene formed.
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