Автор - Juliamay5
Na₂S + 2HCI -> 2NaCl + H₂S
2+
+ 2
+2
-> 2
+2
+ H₂S
2 +
-> H₂S
K₂O + H₂O -> 2KOH
K₂O + H₂O -> 2+2
Mg(OH)₂ + 2HNO₃ -> Mg(NO₃)₂ + 2H₂O
Mg(OH)₂ + 2+2
->
+2
+ 2H₂O
Mg(OH)₂ + 2 ->
+ 2H₂O