i. `CS_(2) + Cl_(2) rarr CCl_(4) + S_(2) Cl_(2)`
`CS_(2) + 2SCl_(4) + 6S`
`C Cl_(4) + 2 [H] overset(Fe//H_(2)O)(rarr) underset("Chloroform")(CHCl_(3)) + HCl`
ii. `CaC_(2) + H_(2) O rarr C_(2) H_(2) + Ca(OH)_(2)`
`C_(2) H_(2) overset(Ni//H_(2))(rarr) CH_(3) - CH_(3)`
`CH_(3) - CH_(3) underset("prolonged treatment") overset(Cl_(2) "(excess).light")(rarr) underset("Hexachloroethane")(Cl_(3)C - C Cl_(3))`