B2O3 + C + Cl2→A + B. A & B are?
BCl2, CO2
BCl3, CO2
BCl3,CO
BCl2,CO
This method is used for the preparation of all the halides of boron except for BF3.
Since Boron exhibits an oxidation state is '+3', it forms ′BCl3'
B2O3 + C + Cl2→A+B.A&B follows