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)

Acetylene reacts with arsenic trichloride to give a poisonous gas Lewisite.
$CH=CH+AsC{l}_3\stackrel{\text{ Anhyd. }AlC{l}_3}{\to }\underset{\text{lewisite}}{CHCl=CH.AsC{l}_2}$