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Question
Auto-oxidation of chloroform in air and sunlight produces a poisonous gas known as ______.
Options
Tear gas
Mustard gas
Phosgene gas
Chlorine gas
Phosphine
Solution
Auto-oxidation of chloroform in air and sunlight produces a poisonous gas known as phosgene gas.
Explanation:
When chloroform \[\ce{(CHCl3)}\] combines with air and sunshine, it creates Phosgene gas \[\ce{(COCl2)}\] and hydrochloric acid \[\ce{(HCl)}\].
\[\ce{2CHCl3 + \underset{(Air)}{O2} ->[Light]\underset{(poisonous gas)}{\underset{Phosgene}{2COCl2}} + 2 HCl}\]
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