NaCl→HCl→Cl₂→Br₂→HBr→AgBr
2NaCl+H₂SO₄=Na₂SO₄+2HCl
4HCl+O₂=2H₂O+ 2Cl₂↑
Cl₂+2NaBr=Br₂+2NaCI
Br₂+H₂=2HBr
HBr+AgNO₃=AgBr↓+HNO₃
NaCl→HCl→Cl₂→Br₂→HBr→AgBr
2NaCl+H₂SO₄=Na₂SO₄+2HCl
4HCl+O₂=2H₂O+ 2Cl₂↑
Cl₂+2NaBr=Br₂+2NaCI
Br₂+H₂=2HBr
HBr+AgNO₃=AgBr↓+HNO₃