1) P4(red phosphorus) + 3Br2(bromine) -> 4PBr3(phosphorus tribromide)2) 2PBr3 + 3H2O -> H3PO3 + 6HBr3) 2HBr + AgNO3 -> 2AgBr + HNO3
1) P4(red phosphorus) + 3Br2(bromine) -> 4PBr3(phosphorus tribromide)
2) 2PBr3 + 3H2O -> H3PO3 + 6HBr
3) 2HBr + AgNO3 -> 2AgBr + HNO3