A hazardous waste incinerator has been burning a certain mass of dichlorobenzene (C6H4 CL 2) per hour . and HCL produced was neutralized with soda ash ( Na2CO3). If the incinerator seitches to buring an equal mass of mixed tetrachlorobipenls ( C 12 Hn6Cl4) by what factor will the consumption of soda ash be increased ?