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  4. What will be obtained when acetylene is treated with arsenic chloride?

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Q. What will be obtained when acetylene is treated with arsenic chloride?

Rajasthan PMTRajasthan PMT 2004

Solution:

Acetylene reacts with arsenic trichloride to give a poisonous gas Lewisite.
$CH = CH + AsCl _{3} \xrightarrow{\text { Anhyd. } AlCl _{3}} \underset{\text{lewisite}}{CHCl = CH . AsCl _{2}}$