Question

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

• A. Lewisite
• B. Mustard gas
• C. Westron
• D. None of these

Answer 1

Answer: (A)

Lewisite

Answer 2

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