AI(OH)3 --> AI203 + H20
Mg + HBr --> MgBr2 + H2
MgO + HCI --> MgCI2 + H2O
CaO + H2O --> Ca(OH)2
Даю 25 баллов.

B20

1) MgO + 2HBr = MgBr2 + H2O

MgO + 2H⁺+2Br⁻ = Mg²⁺+2Br⁻+H2O

2) MgO + 2HClO4 = Mg(ClO4)2 + H2O

MgO + 2H⁺+2ClO4⁻ = Mg²⁺+2ClO4⁻+H2O

B21

1) Fe(OH)₃ + 3HBr = FeBr3 + 3H2O

Fe(OH)₃+3H⁺+3Br⁻ = Fe³⁺ + 3Br⁻ + 3H2O

2) Fe(OH)3 + 3HNO3 = Fe(NO3)3 + 3H2O 

Fe(OH)3 + 3H⁺3NO₃⁻ =Fe³⁺3NO₃⁻+3H2O

B22

1) H3PO4 + 3KOH = K3PO4 + 3H2O

3H⁺+PO₄³⁻+3K⁺+3OH⁻ = 3K⁺+PO₄³⁻+3H2O

2) H3PO4 + 3LiOH = Li3PO4+3H2O

3H⁺+PO₄³⁻+3Li⁺+3OH⁻ = 3Li⁺+PO₄³⁻+3H2O

Подробнее - на Znanija.com - https://znanija.com/task/24918795#readmore