K20 + H20 = 2KOH Mg + 2HCl = MgCl2 + H2
Ag20 = Ag + 02
FeCl2 + NaOH =
Fe(OH)2 + NaCl
CrCl3 + Cr = CrCl2
I
ZnS + HCl = ZnCl2 + H2S
Fe2O3 + H2 = Fe + H20
NH3 = N2 + H2
WO3 + H2 = W + H2O
Al + 02 = A 203
MgO + HBr = MgBr2 + H2O
FeCl2 + Cl2 = FeCl3
NaOH + H3PO4 = Na3PO4 + H2O
MnO2 + Al = Al203 + Mn​

Объяснение:

K2O + H2O = 2KOH

Mg + 2HCl = MgCl2 + H2↑

2Ag2O = 4Ag + O2

FeCl2 + 2NaOH = Fe(OH)2↓ + 2NaCl

2CrCl3 + Cr = 3CrCl2

ZnS + 2HCl = ZnCl2 + H2S↑

Fe2O3 + 3H2 = 2Fe + 3H2O

2NH3 = N2 + 3H2

WO3 + 3H2 = W + 3H2O

4Al + 3O2 = 2Al2O3

MgO + 2HBr = MgBr2 + H2O

2FeCl2 + Cl2 = 2FeCl3

3NaOH + H3PO4 = Na3PO4 + 3H2O

3MnO2 + 4Al = 2Al2O3 + 3Mn