5. Starting with acetylene (A), give the reagents for synthesis of each of the following industrially important compounds: (a) Trans-1,2-Dichloroethene (2 marks) (b) 1,2-Dichloroethane (2 marks) (c) 1,1,2,2-Tetrachloroethane (2 marks) (d) 1,1,2-Trichloroethene (5 marks) (e) 1,1,2-Trichloroethane (3 marks) (f) Pentachlorethane (3 marks) (g) 1,1,2,2-Tetrachloroethene