HELP PLEASE! Lewisite (2-chloroethenyldichloroarsine) was once manufactured as a
ID: 751951 • Letter: H
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HELP PLEASE!
Lewisite (2-chloroethenyldichloroarsine) was once manufactured as a chemical weapon, acting as a lung irritant and a blistering agent. During World War II, British biochemists developed an antidote which came to be known as British anti-Lewisite (BAL) (2,3-disulfanylpropan-1-ol). Today, BAL is used medically to treat toxic metal poisoning. Complete the reaction between Lewisite and BAL by giving the structure of the organic product and indicating the coefficient for the number of moles of HCI produced in the reaction.Explanation / Answer
The compound is prepared by the addition of arsenic trichloride to acetylene in the presence of a suitable catalyst: AsCl3 + C2H2 ? ClCHCHAsCl2 Lewisite, like other arsenous chlorides, hydrolyses in water to form hydrochloric acid: ClCHCHAsCl2 + 2 H2O ? ClCHCHAs(OH)2 + 2 HCl This reaction is accelerated in alkaline solutions, with poisonous (but non-volatile) sodium arsenite being the coproduct. Lewisite is an organoarsenic compound, specifically an arsine. It was once manufactured in the U.S. and Japan as a chemical weapon, acting as a vesicant (blister agent) and lung irritant. Although colorless and odorless, impure samples of lewisite are a yellow or brown liquid with a distinctive odor that has been described as similar to scented geraniums
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