Verified answer

N13

1) 3MgO + P2O5 = Mg3(PO4)2

2) SO2 + CO2 ≠

3) CaO + H2O = Ca(OH)2

4) SO2 + P2O5 ≠

N14

K2O + H2O = 2KOH

BaO + H2O = Ba(OH)2

CaO + H2O = Ca(OH)2