A CHBr₃ Here A is -

Industrial preparation of chloroform employs acetone and -

C₂H₅Cl + AgF → C₂H₅F + AgCl The above reaction is called -

Silver benzoate reacts with bromine in acetone to form -

The reaction of silver carboxylates with bromine dissolved in carbon tetrachloride is called -

Which reaction is termed as Darzen’s Reaction