Mustard gas is prepared by the reation of ethylene with

Options

A. sulphur dichloride
B. sulphur dichloride
C. sulphur tetrachloride
D. sulphur hexafluroride

Answer

A

Explanation

`H_(2)C=CH_(2)+Cl-S-S-Cl+H_(2)C=CH_(2)toC ICH_(2)CH_(2)-S-CH_(2)CH_(2)Cl+S`
The product bis `(2`-chloroethyl) sulphide or `2,2'`-dichlorodiethyl sulphide is called mustard gas.
It is a liquid at room temperature, a poison, and a vesicant. Alternative method to prepare it in pure state:
`2HOCH_(2)CH_(2)Cloverset(Na_(2)S)underset(-2NaCl)rarr2(HOCH_(2)CH_(2))_(2)Soverset(HCl)rarr(ClCH_(2)CH_(2)-)_(2)S`