Вроде физических, ибо изменяется агрегатное состояние
H+ + NO3 <span>¯
Zn<span>²+ + 2CL </span> <span>¯
Ca<span>²+ </span>+ 2(OH) <span>¯
3Na+ + PO4³<span>¯</span></span></span></span>
1) ZnO + 2HCl = ZnCl2 + H2O
2) Zn + 2HCl = ZnCl2 + H2
3) Zn(OH)2 + 2HCl = ZnCl2 + 2H2O
5PH₃ + 8HBrO₃= 5H₃PO₄ + 4Br₂ + 4H₂O
2KMnO₄ + 16HBr = 2KBr + 2MnBr₂ + 5Br₂ + 8H₂O
<span>2KCrO</span>₂<span> + 3Br</span>₂<span> + 8KOH = 2K</span>₂<span>CrO</span>₄<span> + 6KBr + 4H</span>₂<span>O</span>